WTB: Wheelset to race/train

Looking to buy a lightly used wheelset that I can use for training and racing. I am on a budget, so looking for something along the lines of American Classic 420 or maybe Mavic Ksyrium ES. Need to bee 700’s and also Shimano. Looking in the $600 range, but may go more for a great deal. I would love carbon/aero, but don’t know if I can afford them. Any help?

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Am Classic Sprint 350 and you’ll have money left over!

http://forum.slowtwitch.com/gforum.cgi?post=1383352;search_string=deep%20carbon;#1383352
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