I bleed green as well (hence the handle). I had an opportunity to try out the REV 600HO recently and I was impressed! I've never ridden a stock 600 sled that pulled up to 100 MPH that quick.
I tried it on a relatively bumby trail and didn't feel anything, then I got on my 01ZRT, rode the same trail and I felt the bumbs.
Didn't get to ride it in the twists thought so I'm still a little skeptical about that handling aspect but I like what I see so far.