I've got GAS. I use an old Peavey Mark III for bass, and two 1x15's. I'm looking for a top of the line bass specific amp and cab set up, and I've been reading many threads trying to figure out what to get. I want enough power to be able to play an outside fair without pa. I look online at what some of the players are using, and I see players still using multiple 100 watt Marshall stacks, SVT's, and a whole world of solid state amps and cab variations pushing up to 750 watts. I've got the Marshall stack, and it can get as loud as anything I've ever heard. Should I just use that? It sounds great, really vintage. I worry about wrecking the expensive to replace G12H speakers, though this is the same set up guys used in the 60's and 70's. If I buy another amp, I'd rather go lighter than heavier. I've been researching the Edens and Thunderfunks in the 550 range, and realize their differences, but I see people trading up now for 750's. I've passed on a few of what seemed to be like good deals, because I just can't decide.