I'd wait till the 51-60 AV bracket personally; AV's our best huntin ground and the gear ain't too bad there yet if you wait till yer in the yer mid to late 50s, 58-59ish with outlands gear is best if you want to do best. Anything lower is non-AV and you'll be eatin most of the team slots, and the non-boxer slots will tend to be filled with retards who don't cap or defend and instead follow you around going "OMG LOLZ HAX BOTS COOL I WANNA DO IT HOW DO U DO IT WATS A FLAG WHATS A CAP POINT WTF Y I DIE"(aka a normal alliance bg minus the bots/hax bit) etc lol

If you move up to the 61-70 bracket of AV yer gonna get run over kinda bad by welfare nubs; (60?)61-69 brackets of other bgs might not be so bad but you still have to worry about idiots not playing and focusing on you instead lol; low lvl brackets ain't worth it and are piddly honor per kill + all the twinks will rape you silly.