Apparently I've not given my input on this. I am appall.
In order of what I can remember; (also bear in mind I only REALLY started playing guitar 5 or 6 years ago.
Amps
Marshall MG50DFX 1x12 Combo:
I got this as a christmas present from my grandma when I was first starting out and wanted something loud enough for jamming. It served me well, and now belongs to a friend of mine, who it's also serving well. My memory of it is probably a little jaded as I hadn't really experienced anything at the time that made me shit my underpants. I had an old video somewhere where I played Cyberwaste and lo and behold (not that it was hard), tone better than Christians. So it's a worth enough jamming amp on the cheap, although it'll get slated to all fuck around here.
Fender Frontman 100 and matching 4x12:
This was something that I went halfs with my folks on. I ran a Boss Metalcore through it, and it was possible. Would probably pull of grvm tr00 kvlt metal well if I actually remembered how it sounded. I done a few gigs with it and it wasn't awful, wasn't great either. Sold both, but the head is still at my practice space, being used as a bass head with great results for what it is.
Blackstar HT-5:
For me, this is where it all began. I had all but given up guitar pretty much up until 2010, as I was playing bass in a band, and had to sell my Apex 2 while I was unemployed to pay bills I still had, since I couldn't sell my bass. After my 19th birthday (back in 2010), I had been researching, and think I might have even posted on here, looking for low wattage valve heads. I tried the Tiny Terror and decided it blew goats. Tried one of these and loved it. It pulled off modern metal pretty well with a boost. It was this amp that actually made me get the Xiphos 7, as the place I got it from had just gotten one in so rather than spending just under £300, ended up spending just under £900. The plan was to borrow a guitar in the mean time, but why when I can have my own? :metal:
I'd love to get another one of those at some point if I don't decide on something else, just for home, so I can leave my S1 at the practice space. Highly recommended amp, although I feel like I didn't really begin to scratch the surface with it. Sold this to Nick, regretted it not long after.
Blackstar Series One 100:
My first adventure with my own high powered valve amps. Having played a few valve amps by this point, I decided I needed one, and I needed something to gig with, as I'd joined a band and was still playing bass, but was moving to guitar. Oh my word. This thing can be brutal if it needs to be. Contrary to popular belief (and what I believe was once stated on here), it can, and will quite happily do modern metal without a boost. It's an extremely quiet amp, and incredibly versatile for only having 1 EQ. The ISF features it shares with the other amps is a welcome touch, helping to give you a massive range of tones. It's cleans are absolutely magnificent, can go from very dark, to incredibly glassy. OD's can go from AC/DC to well, my band brilliantly too. My only gripe is that the high end can be a bit shrill, and it's lacking in low end. Many people on here will no doubt vouch for its awesomeness however.
Below I'll only mention the ones I can remember;
Cabs
Laney Closed Back 1x12:
I was given this by my GF's dad. When he was moving out, he cleaned out the garage, and this was one of the things I scored, along side 4 bass bins. It had a H&H speaker in which shit the bed after not so long, so I replaced it with a Legend V128. It was a brilliant little cab when paired with the HT-5. Had enough low-end and midrange for palm mutes to not sound naff. All in all, a decent cab. Now belongs to a friend of mine who's using it with great results with an Orange Dual Terror.
Zilla Fatboy 2x12:
For me, so far, the daddy of cabs (save for the Uberkab, which it's incredibly close to). I literally cannot find anything to complain about with this cab. It's smaller than a 4x12, yet sounds bigger than one. It's lighter than a 4x12 so I don't have to visit a Chiropractor once a week. This thing has SO MUCH low end. I've put this up against Mesa OS 4x12's, Orange 4x12's, Marshall 4x12's and Engl 4x12's, and they've all be shown up by this thing (my 2x12 sounds like your 4x12, ner ner ner ner ner). Currently loaded with Eminence Legend V128 and Swamp Thang, it's arse rumbling, and gut punching. Much akin to being smacked in the face by a bear with concrete laden paws. If I ever had to sell this, I'd get another one as soon as I possibly could. I absolutely love it. In fact, next on the list is a Super Fatboy.
Marshall 1922:
I got this from Stu to leave up at my jam space. Currently loaded with V30/T75 combo, it sounds a lot better than I expected it to. Deceptively so. It's no Zilla, but it's certainly no Crate either. Could stand to do with a little more punch and low end, but it's quite a narrow cab in both depth and width. Not at all a bad cab if you need something cheap. I'd be happy to gig with it.
UPDATE
My opinions have changed a bit about amps since I posted this, so here's an update on stuff I've owned since:
Peavey 6505+:
This was a major step in the right direction for me, it solved the problems I was having with the S1-100 and was a bit lighter too which was a bonus. The addition of a separate EQ for each channel was nice, but I never used the clean channel live, so it was kind of a moot point. It's one of the tried and tested metal amps, and for good reason. Instantly recognisable, and will just punch you in the gut for a laugh. I sold this because, as much as I liked it, I didn't want to sound like That Guy Who Also Has A Peavey, especially since I was the only guitarist in my band at the time. That, and the opportunity to buy an amp from a company I've always wanted an amp from came up. It served me well, and I'd be lying if I said I didn't fancy getting a 6534+ at some point, but I digress.
Diezel Hagen:
Oh manz, dem cleenz.
Seriously though, my playing (and recording, might I add), does this thing no justice at all. I bought this amp based off of the brand name and one online demo alone (thanks Ola!), and I'm glad I did. While not amazing at low volumes (I can't think of many 100w valve amps that are), that's not where most of my playing is done. I'm a gigging musician. This thing is astonishingly loud. So so loud. I don't think I've ever had the master volume past maybe 10 o'clock or 10:30. I daren't even try it near 12 o'clock. I might die. It is beyond versatile. 4 individual channels of awesome.
Channel 1 is pristine clean. Everything from nice and warm, to glassy. I love this channel. I need to record a track that do the cleans on this thing justice, as my last ones were terrible.
Channel 2 I haven't actually dabbled too much with, truth be told. it does the AC/DC vibe VERY well. I can see this channel being excellent for a blues or heavy rock player. Me, Stu and James tried this channel with a few boosts, and with some boosts, this channel can do modern metal surprisingly well too.
Channel 3 is where things start to get interesting. This is where the modern metal in the amp really starts to shine. Insanely tight, aggressive, and a huge midrange snarl. Ridiculous amounts of crunch. I actually can't decide whether I prefer this channel or channel 4 for rhythms. I originally prefered 4, but now I'm undecided. I think this is going to be my main rhythm channel from now on (once I get my boost for christmas), as channel 4 becomes what it should be, a lead channel.
Channel 4 is/was my main channel. For rhythms it's crushing. For leads, it's fluid and dynamic. It's exactly the kind of tone I'm looking for in leads. Smooth and articulate. I've been using this channel with a boost for rhythms up until recently, and I've never been happier with my sounds.
To be honest, I always struggle explaining sounds, so my description might not sell this amp, but trust me, it was worth every penny I spent, and still clocked in cheaper than a new Mesa that I had also toyed with the idea of buying.