Used Peavey Ultra combo, you might also be able to score a 5150 combo in the $450-$500 range off someone locally. You can also get used older Randalls in that ball park.

Other then that if you want new a Peavey Vypvr is pretty nice.
cube or a vypr i geuss
never played a vyper but im sure they are just trying to replicate some of the tones of there tube amps
My Gear:
Jackson DK2M
PRS Paul Allender Sig
Epiphone SG Special
Fender Blues Jr.
Roland Micro Cube
Yeah I saw a Peavey Ultra combo for $450. I'm gonna try to help him find a use tube combo.