First impressions, from an beginner:
Look: it is sexy, I love it, it is very comfortable, the 4 finger lever is better than `04 2 finger lever ( I used that for a long time)
Putting it on: on the handlebar, it is easy, clamp system is lovely, not difficult. on the cylinders... I am not commenting them, my mounts were bad, but I could put it on... somehow
Power: compared to a normal `04, stupidly powerful. it just hold... and thats it. no slip, when you lock it, your wheel will stay there.
Flex: my frame flexes. a lot. so I am not going to comment on here, I cannot use a booster, and on a stiffer frame/booster I reckon it will be less fexier. but even with this "awesome" frame, it flexes until the frame, and over that point it feels solid to me
That is my review, I strongly recommend it for anyone, who is thinking about HS33