Which is a better amplifier?

Ok so i have 2 12" subwoofers in a sealed box and together they run at 400 watts rms (200 watts each) so now my problem is that i have narrowed it down to two amplifiers. 1. Pioneer GM-D7500M which puts out 400 watts rms exactly or. 2. Kenwood KAC-6104D which only puts out 300 watts rms. I want to get the pioneer because it is the exact power im looking for but it looks cheap. but on the other hand the kenwood puts out less power but looks like it is better quality ( and it is vented with heat sink. the pioneer doesn't have that.) so i really dont know which one to go with or if there is a better amplifier than either of these for a reasonable price. any ideas? thanks