Awesome thread. Couldn't help myself, had to give this a good long stare.
Full Poly : 82
Gut / Poly : 22
Poly / Gut : 20
Full Nylon : 5
Full Gut : 2
Poly / Nylon : 1
Nylon / Poly : 1
Doubles Players Using Gut / Poly:
1. B. Bryan
2. M. Bryan
3. Mahesh Bhupati
4. Max Mirnyi
5. Daniel Nestor
6. Leander Paes
7. Qureshi
8. Radek Stepanek
What The Other Doubles Players Are Using :
1. Granollers (LXN Orig)
2. Marc Lopez (LXN Orig)
3. Lindstedt (ALU/Gut)
4. Lisa Raymond (VS Team)
5. Paola Suarez (Prince Syngut)
6. Marcin Matkowski (Poly/Gut)
7. Jonathan Marray (Poly/Gut)
Noteworthy : Full poly by a wide margin. Lux Original still has a lot of fans. Gut/Poly only slightly edges out Poly/Gut, thought that would be a no contest even with singles players. Five players using full nylon, and only two using full gut. The current top 6 ATP doubles points leaders all use Gut / Poly. Paolo Suarez is still playing Syngut.
Jack