I tried ZF the other day with my pally levelling some druids, found it to be a real pain as the witch doctors and their healing totems make it very hard to round them up and AOE them down. First pull I gathered about 15 mobs (with 4 or 5 witchdoctors) and it took forever (well...more minutes than I care for) even with destoying the healing totems.

I'm just going to stay in SM until 45 then move to scholo or strat (probably scholo as I know it better) and just farm the first room (assuming it takes longer than 12 mins) so I can do 5 resets in the hour. You could do BRD but it's not for me as I've been there far too many times in the past and just can't bring myself to face it again!