jl audio makes a great amp thats 300x4 (at rms, no peak), but its more like $200-$300

alpine's v-line has been fairly cheap lately, I think best buy is selling them now. somewhere in the $150 range for a 220w peak power amp (I got mine from circut city a year or two ago, and it can run 4 speakers fine).

I dunno about either two brands you named. my past experiences with cheap amps always led me to buying even better amps.