best amp for mm2104

First off hello and thanks if your reading this ill start off saying ive never dealt in car audio but do know some stuff on studios. I have a pair of MM2104 polk/momo 10' subs -Nominal Impedance      4 ohms -Minimum Impedance      3.3 ohms -Power Handling (continuous)      300 w putting these into a 2006 ford focus and was thinking about buying Profile AP2000 -320 watts RMS x 2 at 4 ohms (480 watts RMS x 2 at 2 ohms) now i dont think the extra 20 watts rms will do much to mess up my speakers but i was advised to purchase a: Alpine MRD-M605 -400 watts x 1 at 4 ohms (600 watts RMS x 1 at 2 ohms) due to it would be better sound quality which is great and all but i dont think that amp would be a wise choice and now am thinking neither will be the Profile. now my speakers are 4 ohms but could i bump them down to a 2ohm amp? thats seems wrong or and i the one in the wrong and that is doable any help is great and i thank you again in advance Meph