it's been a couple of years now since i've done my system, but as far as the performance of those amps...you can probably get equivalent or better performance from one of the "other" brands of amps. For example, I have 2 soundstream amps for my stereo. One 4 channel for the doors, and one 2 channel (bridged) for my sub. Excellent performance for cheap...and they look purdy too.

1999 Silver Frost SVT #609 of 2760 Quaife, lightened SVT Flywheel, SPEC stage II clutch, removed resonator, k&n drop in - various other goodies too.