Seeing as how there have been quite many different incarnations of Batman, who is the best of them?
Tell me if I've missed a few* (I'd discounted some Elseworlds Batmen BTW, but you can tell me if they differ enough from the current Batman to be added)
Pre-Crisis Earth One Batman
Pre-Crisis Earth Two Batman
Pre-Crisis Earth Three Owlman
Post Crisis Titans Tomorrow Alternate Future Tim Drake Batman
New 52 Earth Two Batman
New 52 DCnU Batman/Post Crisis Batman (Bruce Wayne)
60's Adam West Batman
All Star / Dark Knight Returns Batman (I think Miller mentioned they were of the same verses, not sure though)
Owlman (JLA Earth 2 Graphic Novel)
Brave and Bold Cartoon Batman
Gotham by Gaslight Batman
Superman Red Son Batman
Dark Knight Trilogy Batman
Kingdom Come Batman
Michael Keaton Batman
Batman Inc Batwing
Batman Inc Knight
Jean Paul Valley Batman
Arkham Asylum/City Batman
*I missed Beyond Batman on purpose, he seems to be more technologically advanced than most Batmen.
**Removed New 52 Earth One Batman since that felt more like an Origin Story and replaced him with Pre Crisis Earth 3 Owlman
Fused together New 52 DCnU Batman and Post Crisis Bruce Wayne,
Removed Post Crisis Dick Grayson and replaced him with Alternate Future Tim Drake Batman from Titans Tomorrow Storyline.
Added some Batmen from Batman Inc and removed Batman of Zurr-enh-Ar
Added Arkham City Batman
This is a battle
No prep, the Batmen's only knowledge of each other is the other is an imposter and must be stopped.
They only have their standard equipment (Batarangs, Bat Bola, ETC no Batmobiles or Batwings)
Good guys have their morals (The Owlmen and Jean Paul Valley don't)
Setting is an uninhabited Arkham City from the Arkham City game