If you're looking at PFC01's and cost is a consideration, you should consider the 06's. They are within 4% torque of the 01's (according to PFC's website) and last much longer. I'm using them right now in my stoptech's and am happy with them. Only complaint is that they take a lap or two to warm up (not ideal for Time Trialing) and take considerable bedding effort in the 1st session to keep from juddering.
I'm serious about the Raybestos pads. Google raybestos st43 and see what I mean. Last time I checked, they were in the mid $200's for the ST60 and st40 caliper shapes. I've been using them for at least 7 years now and even used them in the stock M3 calipers. They're a real bargain for the stoptech's.
It would also be helpful if you mention your intended use of the pads (HPDE, Time Trial, Enduro, etc)