as always, these look a good buy pricewise but what about performance? Anyone got any experience of these pads?

PS, I know i might have opened the proverbial can of SSC worms.

Yep, worked well for me in Dura Ace brakes, they were more the shape of the 7700 series pads, not the 7800 pads, which means the brake doesn't sit perfectly if that bothers you! I did buy some of the cork pads for carbon rims, but never used them, seemed a bit wrong to use £4 pads on £1500 wheels!