Choosing 2009/2010 Dura Ace C50, Token T50 and Zipp 404?

[rrm]

Hi Forum!
I'm doing 1/2 and 1/1 IM and would like to buy a race wheel. Have some good offers all 2009/2010 - Dura Ace C50, Token T50 and Zipp 404 at almost equal prices.
I'm a pretty heavy rider - about 80 kilogram, and the wheel should go nicely to Cannondale Slice, HM, with Sram Red on it...if that matters?!?!
Races is not steep climbs, mostly on flat terrain with few bumps on the ride.

1. Which one would you consider as best buy if the wheels are in almost same conditions?
2. Do I get a lot of improvements buying 2012/2013 models?
I would appreciate some advice - thanks!
Rasmus

[Zen Cyclery]

I'd say go for the C50s. I have a few riding buddies who are on they that swear by them. Both claim that they're stiff, responsive, and quite durable. I like the profile of the rim on the Zipps but admittedly those hubs aren't my favorite.

[rrm]

Hi Zen Thanks for your reply. Thats also my impression.
Still wonder if it is a much slower wheel than the Zipps.
But is's probably not a big difference.
Rasmus