I've been playing a Peavey Mark VI thru a Peavey 410TVX cab for nearly 20 years, and I'm having issues with the head. One minute it's too quiet, the next minute it's to loud...... then it goes from clear to muddy and all sorts of other weird sounds. I'm convinced there's an electrical issue within and rather than throw $$ at it for a repair, I'd rather upgrade to something more modern. I play a P Bass with flats in a metal band.... we tune a 1/2 step down and cover material from Slayer, Megadeth, Dio, Riot (no, not Quiet Riot), Anthrax etc..... We've got two guitars in the band, both playing thru Marshall half stacks and a drummer with a 10 piece double kick Ludwig set..... I will probably keep the 410TVX cab for now, but I'm looking for a head that will keep up with the rest of the band. Solid state would be good with me, just curious as to what others in a similar band are playing??