I run the bigger B5 RS4 brakes up front and they are brilliant with stock pads and I'm soon going to instal the RS4 rears to complete the setup and to keep cost down because the pads cost only $50 a set making it a cost effective upgrade.

B5 RS4 setups apear on RS246.com all the time for quite cheap money to top it all off due to the fact they all upgrade to B7 RS4 brakes.