Yep, the billet calipers are pure porn, that's what I've got on my T8.
The best place - bar none - to get them is
http://www.gprdirect.com/epages/GPRD...0/Catalog/1227 You'll get the best deal at GPR, sound blokes all round. The ones to have are top row far right, second row far left.
But. There's no denying it, the calipers thenselves are pricey, even from GPR. Best part of £600 for the pair once you've got the required brake pads (and after all, the best calipers in the world ain't much use without pads)