Hi Niall, I had a PP before and now of course the TCR which has the CSS discs and pads. I had no problems in stopping power with the PP, for road use the CSS discs are probably not necessary and in fact for track use, not very good as they aren't in pairs so the venting is effectively the wrong way round on one side so early reports indicated they warp prematurely with track use. Cosmetically, the CSS discs are great! I've not tried any alternative pads so can only comment on standard ones, both of which seem to create a fair bit of dust albeit due to lockdown the TCR has seen little action. One other point, I think I read that the CSS are much lighter than standard discs but if that's important you might be wise to check that to be sure!