QFM brakes

[quang]

has anyone here had experience with these brakes? i was thinking of getting the HPX series which are supposed to be on par with bendix ulimate or a1rm which is similar to ebc red stuff. these are suppposed to be fairly cheap in comparison whilst still delivering very good peformance.

here are some specs:
Formulation - Cold Friction - High Friction - Temperature ©
HP-X - 0.41 - 0.42 - 0-550
A1RM - 0.40 - 0.48 - 0-780

thanks