QSC seems to be pretty well liked here for pro-audio amps for subs. PLX costs a little more than RMX line, but some of its ratings are full-bandwidth instead of 1kHz which leads me to believe its 'better'. What are some of the issues I should be looking at? What is the order of quality for QSC lines? What about class H vs AB? Is there a definitive list of which models/lines can have the fan changed to be quieter? Which lines have inputs that work best with home audio? Anything else I'm missing here? Thanks.