(W.O.W) witch is the best class ! hunter,mage,warlock,or pally ? <<?

i have a level 42 pally and am getting a bit bored off it but i do still like it , but i have tryed other class's and like these to so i was just wondering witch is the strongest class! witch is the best in pvp! best attacks! most fun to play! most DPS! and ect..... thanks