This is a great compression pedal. I'm not sure if it's entirely worth the $69.95 I bought it for, but she works, and she works well at that.
From the Main Squeeze I was able to get some extremely nice compression out of even a $90 electric guitar. However, if you're going to hook it up to a guitar for sustain, do it on a nice one, or else you'll get tons of noise as it amplifies your signal. You can do an okay job of blocking out some of the noise with the EQ knob, but even then you have to turn down the sustain a bit.
I would've like the attack/release control to have two separate knobs, but even without being so it's quite functional; if you do it right it will take the hard picking out of your sounds or really boost them up. It all depends on what sound you're hoping to achieve, but this pedal can do them all.