I've narrowed my selections of these items to a few manufactures. As far as Sub drivers go, I'm considering CDT and Image Dynamics. I'm looking to spend no more than 180 for the driver, so which would be better for me, CDT or Image Dynamics? As far as Head Units go, it's either Alpine, Eclipse or Pioneer. Which would you guys recomend? I'm impartial to looks, but I need a head unit with these features MUST have a know to control volume, I need at least 2 AUX input, one for XM radio and the other for my MP3 player (preferrably, I would like 1 to be an optical and the other an RCA, but 2 RCA inputs will do), multi-band parametric EQ to help correct frequency responce problems in my car, crossover setting for the sub and speakers and some kind of bass boost adjustment (keeping it seperate from the eq makes things easier IMO). Must be able to control an XM radio tuner. O and must sound good and be as cheep as possible (no more than 350 if possible please). Thanks!