If I was to go through positions...
Goalkeeper - Casillas, Buffon, Neuer easy. Reina I've always considered the best but he's had a poor year. Cech would probably be there. Hart not yet, Valdes is overrated.
Full backs - Lahm, Dani Alves, Abidal and still probably Cole. Marcelo's getting there, Sagna's pretty much there. Maicon's lost it.
Centre backs - Vidic, Thiago Silva, Kompany, Puyol, Terry, Chiellini, Hummels. Pepe would be if he stopped being a cunt 100% of the time (as opposed to Terry who's generally alright on the pitch), Pique's immensely talented but doesn't switch on half the time. Ferdinand's been mostly great but lost his pace. Koscielny and Badstuber look promising and Agger is on that second rung.
Centre mids - Xavi, Iniesta, Busquets, Modric, Xabi Alonso, Schweinsteiger, Yaya, Fabregas. Vidal, Song and Kroos will be there, probably Wilshere if he gets over the injury. Martinez, Marchisio...
Attacking midfielders/wingers - Robben, Ozil, Silva, probably Ribery. Bale, Mata, Di Maria, Munaian, Valencia, Nani, Muller, Kagawa, Götze, Cazorla either will be or are just below.
Strikers - Tevez, RvP, Ronaldo, Messi, Drogba (on form), Rooney, Aguero, Eto'o and Villa. Ibra is too inconsistent, Cavani, Suarez, Soldado, Falcao, Llorente, Higuain, Benzema are below or will be