From seeing this thread come up a few times, the answer usually ends with the following:

If you're using them for the street and recreational use (i.e. not track) you won't notice a difference with either because you aren't producing the kind of track racer torque that they're designed for.

Both are top shelf stuff and you should make your choice based on looks, ease of installation, or whichever will make you feel happier.

(To qualify this, I haven't tried either crankset. I've just read this discussion a number of times and there never seems to be a clear winner)