I've used SRAM, Wipperman, KMC, and YBN quick links on my 11-sp Campag systems, all with Campag chains. They all work. SRAM and KMC seem to work the best IMHO, YBN is okay - sometimes even new ones won't "snap" shut, and the Wipperman-Conex didn't seem to shift as well as the others. But they all worked, and I would use any of them if I needed to.