Love my 8t 2.0. Didn't require much by way of upgrades and handles like a dream. I would highly recommend it. Very durable as well. The only thing I don't like about is the standard screws and it does seem sloppier relative to my 808, but so do all cars.
I would have bought the Xray if they based it off the 808, but my buddy has a new xt8 '09 and it looks really good. A complete redesign probably wasn't needed, but it would have helped x-ray sell more cars for sure. The quality of Xray is just in a different league that none of the other mfg's are even close to imho. The plastic and metal is just on a whole different level.