Yeah they sound like they bite well and they do.. but when you lock the back brake and stamp on the forward pedal, they slip :P 
 
Might just need bedding in some more though, and they should last quite a nice long time too :- 
 
For the person that asked, they are 15quid new I belive. 
 
Sam, I'm gonna keep using em for a bit longer. See what they are like on tomoro's ride  :ermm: