^ The supreme is a decent amp, miles ahead of your MG, but for 500 dollars I think you can do better if you get off the halfstack bandwagon. What kind of music do you play, and whats your budget? Really in the 500 dollar price range you should be looking at a used tube combos, really if you can add a couple hunderd you should be able to find an amp that suits what ever style you play. Forget about halfstacks, they are huge pain to move around, and 99% of musicians will never really need one.
Quote by Cachao

Johnbryant you are obviously a genius

My Gear
Custom USA Standard Telecaster
Peavey Triple XXX 212 Combo
Peavey MS412 Cab Celestion G12K-85's
POD 2.0 (the ultimate practice setup)
Guild DV6
i play like guns n roses style stuff
i like to get really heavy but still have the really smooth tone for lead work
Iceman w/ emgs
fender fmdsp65
Boss MetalZone
Fender Cybertwin
Epi LP plus top
Zoom gfx4
Death metal (sounds amazing through bass amp)
ibanez weeping demon