I agree with Cullen, and if you have "track only" tires, the S3 Pros are unbeatable.
I have some road/track tires that I use on my road/track wheels. My Zipp 999's, and the HED 3C front I use have the S3 Lite HiCC <215's that I mentioned in my email because they are so much more durable ON the road and the wheels get used in road TTs and even some road races/crits in the case of the front.
-SD
I can't wait to see you out there, I'd put money on you medalling in the 4km pursuit at the District Can/Am challenge. Let me know if you have time during the day to get out there as I am trying to find a group to train with before 6pm.
https://www.kickstarter.com/...bike-for-the-new-era