TC, I don't think there's much in price difference between the Brembo kit and the RS4 kit? but an 8-pot and bigger discs for the same price, that's why I'd choose the latter.
My brakes have gone to ratsh*t - there's been a difference of opinion on what I think is acceptable clearance between the disc & lower ball joint and the makers of the custom bells think is... I looked into a change of bells for an equivalent AP version in a lower offset, but it was just a royal pain and would have made any future issues tricky. So they've gone back, I'm getting a refund and I'm looking at either the version6 of the VWR kit, or an AP 362mm kit that's just been developed for Mike Kurton's Scirocco race car with the help of Mark Farmer.
I want the VWR kit, JonnyC will tell you just how good it is.. and he should know a decent set of brakes. But if the APs come in significantly cheaper, then I may have those. The VWR kit is super trick, and therefore carries a worthy pricetag.
It all depends on what I can afford as I'm probably going to to have to front another £xxx to make up the difference from what I paid... I got my kit at cost as a "sorry" for something. I hope the new "sorry" can make up some of the £ difference to assist my choice.
I'll square the full story as to the how and why once my money has landed back in my account.