Heya Tried out the GT-500 for the 1st time at the store, and to my surprise, I liked it alot. Set the amp clean (I was on a Fender), Boost side for lower gain bluesy/breakup rhythm tone, and Distortion side for more of a all-out rock tone. I got useable tone on both sides, so I was pretty happy with the results. But before I actually buy the thing, I'd like to hear any COMPLAINTS you have experienced, have read, have heard, etc. I'm gonna demo it again at the store, and I'd like to know the downsides so I can test stuff to look out for. I know there are many complaints about the Distortion side, but what about it is bad? Also, are there any differences between the RED ones and the GREY ones?