I'll have to agree with what altiain said. I did just fine on OEM pads the first time I was on the track and the first year I went to Hallett. This last year, I cooked a set of EBC Yellow pads in only 3 laps. A couple years ago after Gary conned me into trying the Hawk HP+ as a dual purpose pad, I cooked them at Hallett. At least I got a full session out of them!
My view is go with OEM or I'm loving the EBC Yellows for street (not for track if you have any experiance despite saying track ready on the box!).
At least go with Hawk Black pads for the track; if you are fairly experianced then go with the Blues or something similar. I've said it before, I left the Hawk Blacks on my daily car a few years ago and even though they are a full race pad, they are more than acceptable for street if you can live with the dust. They did not squeal like the terrible pos HP+ pads and do not need warm up like more aggressive race pads.