I started with 5 pallys then switched to 1 pally 4 dks. and works nice for me. u can que to dungeons this way too.
dks can handle alot of selfhealing passively. and pally can spam himself. u can ress from dks midfight or ress after with pally.
I also gearing upp my hunter for dungeons. and have tried some. and as the other says its more depending on dungeon u do.
both 3 teams are 110 (pallys, dks, hunters)
If u have the time and like diffrent groups a hunter team and tankteam is fun.
if u raf smart level the tanks then boost hunters in dungeon to 60+ then raf then to max raf lvl.
at 100 questing is better xp then going dungeons to 110