I'm not a huge car Audio buff, so I don't know all the good brand from the not so good brands. Anyway, I'm looking for about 75watts RMS or more.. I'm going to be running an Alpine CDA-9833 head unit, and for speakers I was thinking of Infinity Kappa 6.5 up front, stock rears (for now) and a JL 10in w7 with probably the JL 500/1 sub amp. That part is figured out, but now I need an amp to power my door and rear speakers, I don't want to be drowned out in bass only. I don't have a huge budget, but the sub and sub amp are coming later, so right now my focus is on my mains. The sub an amp can be put off a little longer if need be. Any recomendations on a 4 channel amp, and maybe even some different speakers for the doors? Also, I did a search on here and US Acoustics seemed to be recomended alot, but like I said, I don't know the really good brands from the band brands. Thanks for the help!