Has anyone had experience with the Infinity Reference series amps? My brother decided to be a#$ and take back his JL audio amp that I have been using in my Dodge. My Orion is not working so now I need a new amp. I have been really happy with my Kappa perfect 6.5" components. I figured I can get the 4 channel Infinity off of Ebay for around $120.00. Is there any reason not to try one of these? Are they good amps or crap?