Wotlk realms info and pvp

Hi!
Pls tell me more about realms info - rates (Deathwing, Ragnaros).
What's server Wotlk is better for PvP?
PvP is playable with item shop or P2W?
Thx

All realms (excluding Warsong and Blackrock, instant max lvl) are x7 experience rates, and x5 rates for reputation, gold and professions. Lordaeron is the new exception it is 1x