Starting to play WoW again and have some questions?Follow

I have been a high level Hunter, Mage and Priest. I want a quick leveling character who a good contribution to groups and guilds.

I preferably want a Gnome character...
Gnome
[]WARRIOR[/] (is it fun throughout the whole game, is it quick leveling, do raid guilds need them)
[]WARLOCK [/](Same and Do they have a lot of good DPS spells)
[]ROGUE [/](fun, useful needed in raid guilds)

Warriors will get into more groups because they are needed more often, warlocks have pets and are almost self-sustaining, and rogues have stealth which is always a plus


personally i like rogues the best