I used the new red pads at the euros, I am VERY impressed with them.
I was using koxx reds before, they had good grip but as I got tired they would slip, not so with the heatsinks, they kept working and working. This is the best I have ever got my brake working.
I only used them for the comp, on a harsh grind. they wore about a mill, I can imagian they wouldnt last very long.
I havnt used the in the wet yet, so I cant comment on that.
I would probably want these pads for comp only, and use slightly harder (well, longer lasting) pads of every day use.
I also have the v brake virsions, I have put them on my bmx chrome rim, they are twice as good as the spanish flys I had on before.