Any opinions on the MXR Dyna Comp vs. the MXR Super Comp? I plan on getting one for clean / semi dirty strat sounds, although they do not need to be super-stratty. Does the attack knob make a big difference? I want to keep my purchase under $80 or so. I have Dimarzio Area 58 and 61 pickups, which are completely noiseless, if that makes a difference. Thanks for your input!