I'm trying to price up various groupsets, one of which is Athena 11-sp. I know where I am with the Shimano numbering system (5500/5600/5700 etc) but Campagnolo doesn't seem to have such a straightforward convention for different models.

Anyway, I'm getting a bit confused by the various descriptions I see for cranksets specifically at different retailers, which also means I'm confused about whether I'm comparing the same item on price.

Some of them are described as the Athena 'EVO' crankset, others specifically listed as 'EPS' or 'EPS-compatible'. A few retailers list manufacturer part numbers, and I do seem to find numbers starting with both FC13 and FC11 (which I believe indicates Campy's model year). For what it's worth, if you look at the Athena EPS group on Campagnolo.com and then the non-EPS group, clicking the crankset on either one takes you to the same page. So I suspect whether the component is sold as 'EPS-compatible' or not doesn't mean anything (and I'm not interested in EPS). But 'EVO' I can't understand at all...

I'm not sure if there is any meaningful difference between any of these parts, and / or if there are any differences at all since the 2011 model year (which is when they switched to Power-Torque, I think). Does anyone know?

Thanks!