Ok, I wanted to post just that and being an arse to you. But I wont.
Nowadays, prot has become the best leveling spec for it's survivavility (I think I spelled that so wrong) + a lot of damage.
But if you want to choose between those 2, I'd go TG. From my experience, fury is far more efficient on leveling than arms, also, you look hell cool with 2 2Hs
Hope it helps,