i have ridden these, the one i rode was 100mm travel, and it seemed to work pretty good, i rode it xc in the new forest and also a day in the alps. it was on a giant VT that belonged to the then Giant rep.
the anti dive thing did work, to a point, the fork is not supposed to compress under braking so that it still has some travel if it hits a bump while under braking, but i found that on a full suss the rear end extended, sort of like an ejector seat!!
so i reckon these are better for hard tails than full suss bikes but that is just my opinion.
also, don't go too big on the rotor size, a 200mm rotor will make the fork twist under heavy braking and therefore steer to the left.