What sort of pads do you guys use for track days?

I'm tracking the R for the first time in a few weeks. I've done a heap of track days previously (in a skyline), and I know how annoying it is getting fade after a few hot laps.. Having to do cool-down laps mid session is a pain.

I'm running stock brakes with R-comps and a fair bit more power than stock, so I want to mitigate the inevitable! The stock brakes are going to be the weakest link.

Any suggestions?