I have a question regarding the 2 amps. I'm not sure which one I should get. Would the PF-350 (running 2 1x15 cabs) be loud enough for a hard rock band playing small to medium venues, or should I save a bit more and get the PF-500? I need this head ASAP so If the PF-350 can do this well I'd rather get that, though If the PF-500 would be more suited to the job, I guess I can spare an extra hundred. Any help on this?