they tried a hydraulic type and it got munched so they withdrew it- not sure if the idea has been shelved or if they've gone back to the drawing board.
I bought a standard one from a motorfactors and its pretty noisy after not many miles- my mate did the same not so long ago and his was still quiet right upto the day he sold it so very much luck of the draw
Worth a punt for £100 imo as even though mine is a bit noisy it still pulls pretty well