Well, I'm still really impressed with the ICS one, and yeah, it is used. It's a big step up from the Double Eagle m83 that I was using before, though.
We've only popped each other a couple times from about ten yards, but this weekend we're going to have a small game with a bit more range. What I have noticed about the two guns though... mine feels much nicer in hand, is a lot heavier, and isn't as wobbly.
I'm not sure which one he has, he bought it from the JungleToy in Tucson, but I doubt that really narrows that down any.