Wheels for youth crit racing

I have a budget of £500 max and was wondering about which wheels I should be looking for in this price range. At the moment I was thinking about some second-hand Cosmic Carbone's or a similar deep-section, could anyone recommend a decent wheel for me in my price range? I don't really care about them being second-hand as it just means I get more wheel for less money. Thanks.
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viewtopic.php?f=40042&t=12776517&p=17724869&hilit=chinese+wheels#p17724869
http://www.bike-discount.de/shop/a47512 ... html?lg=en
And here's a detailed review:
http://road.cc/content/review/38773-shimano-rs80-c50-wheelset
You may be able to get a set of handbuilts, drop David a line via http://www.dcrwheels.co.uk/ and see what he can do for £500.
Dura Ace c50's - maybe possible second hand if you can find anyone who wants to part with them.
Pinarello Dogma 2 (ex Team SKY) 2012
Cube Agree GTC Ultegra 2012
Giant Defy 105 2009
Voodoo Bizango - 2014 - Dead - Hit by a car
Vitus Sentier VRS - 2017
Voodoo Bizango - 2014 - Dead - Hit by a car
Vitus Sentier VRS - 2017
Voodoo Bizango - 2014 - Dead - Hit by a car
Vitus Sentier VRS - 2017