WTD - 5700 (105) Compact Crank 175mm

I don't have a 5700 crank. but I do have an R600 in 175, and an FSA K-Force 175 if either of those are of interest. Both are used. R600 a fair bit, but the FSA only about 200 miles (it was a recall replacement for another crank that I got a few weeks before I upgraded the whole bike to 7900).

The FSA is this model, but with the pro rings: http://www.chainreactioncycles.com/Models.aspx?ModelID=17376

EDIT: Like this - http://www.bikeradar.com/gear/category/components/chainset/product/revie...

Matt.

Matt, not quite what I was looking for I'm afraid, thanks though.
Neil