Re: Which realm?
I have characters on several realms, honestly I can't think of one I'd recommend over the other. For Alliance, the Vindication battlegroup is pretty good - try some servers on that.
Honestly if you're sick of asshats roll Horde. It sounds like a silly stereotype but it's true. Just avoid the blood elves (Alliance rerollers). If you roll horde I would strongly recommend Lightning's Blade.
__________________Core i7 920 @ 3.2 | ASUS P6T Deluxe V2
6GB Mushkin DDR3-1600 RAM
eVGA GTX 570 SC | Auzen X-Fi Prelude 7.1