Well, I'm starting to get a band together and I need a good rig for small shows and practice and I don't want a combo. I've been looking at the Fender Bassman400 head, and the Carvin600 head. As for cabs, I've been checking out some Hartke stuff that I would think would be crappy ($300 for a 4 10). I was also looking at the Fender Bassman 2 15. Any suggestions, are these any good IYHO. I'm only half understanding "impendance" so can someone help me out with combinations of heads and cabs? Thanks!