I'd personally go with the PF option i think, for the money.
£720 is a lot of money for just a set of discs and pads. You could spend a grand on a big brake kit like the 356mm ksports, sell your brembos and net cost is less than the AP discs/pads....
I'd pick up the phone and have a chat with Alyn @ AS Performance, he's always good for advice and may well do a good price on PFs as well if you go that route
