Frankly, I've had pretty good luck with TC Electronics M300, which is now down to $200. It works for me when I occasionally need reverb, which I admit is rare, because mostly I only use it on electric guitar, where I mostly get it from POD Pro. However, what I have found is that the M300 is an excellent A-D converter with the global bypass engaged, and it's actually not a bad compressor, even though the attack and release are fixed. At least the ratio and threshold are adjustable. I believe the M300 is actually one of the best buys on the market in inexpensive multi- fx boxes.-Richie