Check out Carvin...I've been using the stuff since 1962. Have three systems right now. They have an interesting new head-8 or 12 channels-three amplifiers (stereo plus monitor) for $499.99, I think, and their cabinets with 15's are about $200.00 each) There's lots's of good stuff out there, and I'm considering a Yamaha from George Kaye, but, for the money and service, this stuff has always done the job for me. Go on their website..they only sell direct.
(Remember-Carvin was the choice of Frank Zappa, so it's gotta be cool!).
Russ