Well...I haven't tried wavey's but in last weeks MCN they did some very unscientific tests and compared them to standard discs...No real improvement in braking performance (stopping distance etc), apart from the are less likely to fade under hard braking.
I have switched from standard brembo discs to full floaters (cast iron) that are fitted on the SP3, and the difference is noticeable.
These combined with the Brembo Radial m/c, braided hoses and P4 calipers = eye popping stopping
