You only seem to care about the higher weight classes..
Heavyweight: As a Mexican i tend to cheer for Cain Velasquez but my favorite fighter is actually Junior Dos Santos because i like his style of fighting.
Lightheavyweight: This one is tough for me, i like alot of fighters, Thiago, Shogun, etc.. But i think i'm going with Machida.
Middleweight: Not sure about this one between Maia and Belfort, but since Belfort usually has great fights, i'm going with Belfort.
Welterweight: Diego Sanchez, though i like Ellenberger, Kampmann and a few other fighters too.
Lightweight: This one i the easiest for me, Frankie Edgar.. He's like an idol to me.
Featherweight: Kenny Florian, i know he's going back to Lightweight, but for now it's him.
Bantamweight: Miguel Torres.. Urijah and Cruz are both cool and very cool fighters, but i like Torres better..
My favorite divisions are the Welterweight and Lightweight Divisions because currently they are the most stacked. Also, as you can see, i have a hard time picking favorite fighters because i like alot of fighters.