I have an EQ200. It took care of the tone suck, I wouldn't go without it, at this point. I also have a SA Aftershock. It does the trick - keep in mind, I rarely use dirt, usually with an ebow, so I'm not big on having that perfect dirt sound.it is. i've thought about the boss, cause it does the stereo thing, is a little bigger and might be more programmable (or maybe just easier?). i don't thing the boss morphs, which it sounds like the sa does. i haven't looked into the exp pedal functionality on the boss, so i don't knwo what it does.
right now, no money for it, so it doesn't matter.