Well, the reviews that I've read from the same source (can't remember the magazine) said that the RC8 performed slightly better. The XB8 had a little looser rear end and not as much turn in if I remember correctly. But I have to say if I were to do a buggy I would probably figure out a way to convert the M1. That thing is pimpy.
I think Xray is actually coming out with another revision of their buggy though aren't they? If you could tune the loose back end and steering on the XB8 - I say Xray. But hey, I'm a little biased now that I have a XT8.
