To me my opinion is that you cant really get a better pad then the koxx bloxx, being that they last for ages,ive had mine since :-" well about 4-5 months and they still working ace, they work on both grinded rims and a clean rim, theres loadza pad on them.
The coustellier pads surely will work well cos they are being used ny the top rioders but can they give u what the koxx bloxx do?? Long lasting good braking??
Id say the cousts pads will where down alot quicker then koxx bloxx.
The smaller pads give u a more solid feeel on the lever but where down quicker in my experience, bein ghtta there isnt alot of backing once the poad is whered u have to buy new ones.
Im gonna stick wi my koxx bloxx! (Y)