I bought Ferodo DS2500s, but didn't have enough parts to fit either of the 256mm setups (Audi and Vauxhall) I've got thanks to sheared bleed nipples and/or missing caliper slide bolts, so ended up throwing on a set of TRW pads for the 239mm G40 setup for today's CP trackday.
They coped well considering, but I'd be lying if I said they weren't smoking like a bastard after several committed laps. Still, I've now got a very solid baseline for comparing the 256mm setup.