I got exactly those XT wheels from Bike-Discount.
Pros – proper UST rather than ‘tubeless ready’ so are a cinch to use tubeless, no need for rim strips, no sticky goo, tyres go up first time with a hand pump and stay up, and no burping. They are tough – I’m 92kg and I don’t worry about them taking the abuse I give them over jumps & rocks. I actually like cup & cone, so will put that down as a plus – so there! And centrelock rotors are definitely a better system than six bolt, so can’t agree with MrBlobby on that one. Overall I think Shimano wheels are great value compared to others out there, and they’re hand built so run strong and true.
Cons – Not particularly light – so if that’s your main criteria then look elsewhere. Shimano’s XT freehubs are cr@p – mine is already starting to feel glitchy after only six months, so I’ve ordered a spare! Proprietry spokes are difficult to get hold of and expensive – I’ve been told the ones for this wheel aren’t available until April, and are about five quid each.
On balance, I’m very happy with them, and most important they match all the other XT stuff on my bike 8)