Hi guys, im buying a 4 channel amp for my component infinity kappas in my front and infinity kapa 6x9's in the back. I can either buy an alpine mpr f-300 or a kicker zx200.4. I dont know whick one of these is better or which is the better quality or more reputable company. The kappas are 2 ohm impedance and 90W rms and the alpine has 75Wx4 at 2 ohm and the kicker has 50Wx4 at 2 ohm. I dont know how big of difference this will make but just looking for some input. These are the contenders because they are each below 200 dollars. Thanks!