I have yet to find another pad that offers the same performance as the swiss stop pad. I believe they're the best pad going.
If you're a larger rider and do a lot of hills, pads will not last as long. Generally speaking I find my Swiss Stop outlast the competition.
If you're a campy guy, check out the newest version of the King Yellow the
Swiss Stop Race Pro Yellow King GHP to be available by 09 - soft availability date.