I'm looking at buying a compressor, either a T-Rex Comp Nova, Carl Martin Compressor/Limiter, Electro-harmonix Black Finger, or Aphex Punch Factory. I've never personally played any of these, so I don't know much except the written specs and written reviews from random people. Also, if you could suggest a better compressor in this price range, I'd appreciate it. And I need one that would work well for extended-range basses (7-strings) and tapping (I'm learning), so if I could get soem advice there too that'd be great.