The Guardian List thread is getting some good discussion going, but I feel like a straight top 100 list is limiting. I think rankings by position are much more interesting. So, without further ado, here are my top 5 players by position. Like anyone, I will be biased by the matches I see and the leagues I follow closer than others, but that's why we're discussing this.
GK
1. Neuer
2. Courtois
3. De Gea
4. Lloris
5. Bravo
CB
1. Kompany
2. Chiellini
3. Godin
4. Boateng
5. Mathieu
FB
1. Lahm
2. Zabaleta
3. Jordi Alba
4. Marcelo
5. Felipe Luis
DMF
1. Busquets
2. Matuidi
3. Motta
4. Xabi Alonso
5. Matic
CMF - box-to-box types, as opposed to #10s
1. Toure
2. Modric
3. Vidal
4. Kroos
5. Rakitic/Pogba
Outside MF (players who play on the flanks and have defensive roles, as opposed to wingers who do not have substantial defensive responsibilities)
1. Di Maria
2. Isco
3. Ribery
4. Turan
5. Reus
AMF - #10s
1. Iniesta
2. Cesc
3. David Silva
4. Gotze
5. Mata
Wingers
1. Messi
2. CRonaldo
3. Robben
4. Muller
5. Bale
CF
1. Zlatan
2. Costa
3. Suarez
4. Aguero
5. Benzema
GK
1. Neuer
2. Courtois
3. De Gea
4. Lloris
5. Bravo
CB
1. Kompany
2. Chiellini
3. Godin
4. Boateng
5. Mathieu
FB
1. Lahm
2. Zabaleta
3. Jordi Alba
4. Marcelo
5. Felipe Luis
DMF
1. Busquets
2. Matuidi
3. Motta
4. Xabi Alonso
5. Matic
CMF - box-to-box types, as opposed to #10s
1. Toure
2. Modric
3. Vidal
4. Kroos
5. Rakitic/Pogba
Outside MF (players who play on the flanks and have defensive roles, as opposed to wingers who do not have substantial defensive responsibilities)
1. Di Maria
2. Isco
3. Ribery
4. Turan
5. Reus
AMF - #10s
1. Iniesta
2. Cesc
3. David Silva
4. Gotze
5. Mata
Wingers
1. Messi
2. CRonaldo
3. Robben
4. Muller
5. Bale
CF
1. Zlatan
2. Costa
3. Suarez
4. Aguero
5. Benzema