I need some input here. I am looking for new head. I have about $500 to spend. I considered a Carvin BX500. But there is a thread here about them ,and alot of people have had alot of problems. Tried a GK Backline 600. No thanks. I am suppose to pick up a Benz Benz Shuttle 6.0. Same guy has a 800RB. I'm told not a lot of power. I am nervous cause it has a tube pre-amp. I'm not a tube guy. I can pick up a used Peavey Tour 700 for $300. Its not bad. Any suggestions?