crunch amps are cheap, but the quality is 100 times better then legacy, pyramid, etc...
they dont pump out distortion or get insanely hot like the other brands. i think they just have a bad reputation because they are so cheap. but from my experiences with crunch amps, i thought they were actually pretty good. i've done a few installs with crunch amps for some college kids that didnt have a lot of money to spend. one of the vehicles i installed a 400 watt rms crunch amp driving two orion subs. it sounded great. better then some systems that cost twice as much.
i'm not saying these amps are in the same category as kicker, audiobahn, orion, zapco, etc... but for someone on a budget, they are the best choice for the $$$