2014 without hesitation, the most promising for the next PES games to come, gives me hopes and that old-engine 2008-2013 doesn't provide.
Even if there are few things that i really dislike (place kicking, goalkeepers positionning angle etc.) the game seems like a good new start for me.
Ok, it was an unreleased game at first (missing mode, littles lags, a bit beta-ish, less now with new patches) but with a very good basis than a full game proper release but old to watch and play, rigid, robotic like in this previous versions. Current graphics on outdated engine/algorithms and physics (2008 to 2013) doesn't give me good sensations at all.
Even if it's less marked in 2011 and 2013 games because somes algorithms have been added since 2011 and animations. 2009, 2008, 2010, where awful to me to watch and play, directions changes hypra on rails and upperfast laser passes maked the game limits unplayable.
I don't really remember about PES 2012 only that the game was unbalanced.
I go for:
-2014 (like it's now with corrective patches)
-2013 and 2011 can't compare coz i don't have both games (2011 sold), only 2013... But i remember to have goods sensations with PES 2011.
-The rest in the trash, Fifa was largly better at this time, even if it never provide me the "total football feeling", it was a good alternative and well produced.
I still prefer to play on old school WE/PES 1 to 9 or PES 2014 which seems more authentic and fit for their generations, instead of playing with a tampered and hybrid game mixing PS2 engine with middle-gen graphics.