I have the HD500. I like it but I don't spend much time dorking with it. I have it in front of a QSC K10. I play low volume for the most part and I suck... but I'm old so I know what sounds like shit at least... or at least I tell myself I do... because I'm old.
I have a Mesa 4x12 and I'm either going to sell it or pair it with a small tube amp. Do any of you have both the HD500 (or something similar) and a small tube amp such as the Blackstar HT5? If so, what do you find yourself going to when you plug in and play?
I think Vince runs this setup and is pretty happy with it.