Seems wonderful. I've played around with the CDJ 2000 maximum a handfull og times, but you don't need to be a rocket science to understand the beaty in these players. I can only imagine this is better.
I wouldn't swap them with my Technics, but would be nice to have a pair on the side though. The way I see it playing vinyl vs playing with these machines is two totally different things, but I guess both can be fun. Some times it's nice to being able not to get stuck in the same old pattern of mixing style.
I agree that the sync button doesn't matter since you don't get forced to use it, but still I think it's sad that eventually some people will come into the game without ever knowing the most simple basics...
Too bad technology like this is do damn expensive, otherwise I would probably have bought a pair :-)