You keep saying "team" as if you will have 5 toons. If thats true and youre doing the raf thing i would level all of them to 60: paladin, warrior, dk, druid.
Having just finished a bunch of raf teams, i found the paladin and warrior easy to tank with. The only problem i had with a warrior is starting a fight unprepared and without rage. A paladin can dump a bunch of threat right up front without worrying about rage.
While leveling to 60 i found the warriors to have plenty of aoe threat. Rend + Thunderclap is awesome for aoe threat generation. Also, at least up to 60 i think they have more 'rescue the dps' type tricks than a paladin.
I use two buttons with cast sequences on them. One for single target dps, the other for 2 or more mobs.
I would level em all while you can. Thats what i did and my plan post-60 is to use a different kind of tank for each team. Since 60 i personally have found paladins the easiest, then warriors, then dks. I still havent used a druid tank after 60 because it sucked so much earlier on. Eventually i will do it. You never know what patch is going to come out that will completely chnage how a class works. I remember shortly after wotlk came out, druids became amazing tanks. IMO, they suck now but mqybe they get a lot better again higher up in the levels. It seems blizzard stretched out all the talents and just moved them up the level range.
Ex: holy nova. Wasnt that like level 10 or 20 at one time? Now its 62 or something ridiculous. And prayer of mending, now its 70-something. In any event, back to the topic at hand - i will play the druid tank just to relearn it in case it ends up being good.
Any tank class that holds aggro for 2-3 seconds is good enough while leveling. Seriously, 3 seconds is more than long enough.
Looky here at my shiny shield while a crowd incinerates you in the blink of an eye!
Connect With Us