I have tried several makes and compounds some good, some not so good. However, in my search for a way of not paying £200 for a set of Brembo Z04's I think I have found the closest yet. Used them at Oulton yesterday and they were outstanding and far better than anything I have already tried.
Less than half the price of the Brembo's
This guy does most caliper makes.
http://www.ebay.co.uk/itm/3606175329... 4.m1439.l2649 