Still thinking about getting a smaller amp for practice, bought a B-52 AT-100 w/ 4x12 cab a few weeks ago.. great amp but a little loud for what I need here (impulse buy). Well now I'll have it for whenever I start playing with a band at least.
I plan on using one of the amps in question (Blackstar HT-5, Jet City JCA20H, Orange Micro Terror) with my B-52 4x12 cab. Can't afford a smaller cab right now but in the future sometime I'll probably pick one up that matches whichever practice amp I get.
Used prices from Guitar Center, the Blackstar is $220, Jet City is $200, and the Orange is only $150 brand new. I don't expect the Orange to get many votes but I just threw it in because it's one I've been looking at. Also, I'd be ordering this before trying, since I don't live anywhere near a guitar center.
How much is the JCA22H? That's seemingly a better buy than the 20 (2 channel rather than 1 IIRC). I wouldn't touch the Micro Terror with a clap-riddled cock. The HT-5 is pretty awesome when boosted. Wish I hadn't sold mine actually.