With all due respect, I think we must have different standards for "silent" -- or perhaps you've never exerienced the Izumi V with a tuned cog. I personally have never seen a quiet running KMC chain, and in my past life as a track coach I have been around perhaps more than a thousand track bikes. Of course, just because I haven't seen something doesn't mean it's never happened, but IMO the odds are getting a bit steep.

If it works for you, of course...