I have 3 used heads that Im looking at to pair with my 4ohm Goliath SR IV 6x10 cab. Similar power at different prices. Ampeg SVT-7 pro-$500ish(Rev. C) GK 1001RBII- $400 Carvin B1500- $300 Using in a loud hard rock/metal band(Ozzy,GnR,Scorpions type stuff) inside and outside PA supported shows. Just wondering what anyone thinks about saving $,reliability,ass kicking ect... These fit my budget of $500 and are localish(in state). Hard to demo them with my cab though. Somone reccomended a 750X also in the same price range. I just want to be done with putting this together soon and have a pro rock rig. Thanks so much!