PvP adviceFollow

Hello fellow addicts.
I wanna start PvPing on my druid but I really don't know what to expect from the different specs druids have. I was feral so far (just PvE tanking and DPS specs) and I don't really know which path to choose. Either boomkin, feral, tree (or a boomkin/tree hibrid if it still works).
If someone could give me some tips about what those specs are each good at, what beats the hell outta them etc. I'd try for myself but I don't really have the money/gear to test them to their full potential. Some talent build links are welcome too^^

The only pvp experience I have is as feral in a 2s team with a disc priest, and with a SV hunter and the disc priest in 3s. In 2s, you don't really have the ability to insta-gib someone like a warrior or rogue, but you do have more utility to make up for the fact that your burst can take a while to set up. Ferals have very high sustained damage (only rivaled by unmolested hunters and casters), but in most cases are inferior to rogues because of the fact that rogues are untouchable during their cooldowns, and a team can usually take someone down before they fall off. You really shine in mid-length to long matches where you get a chance to set up some burst and a cc chain. If you're running with a healer, you can win most mana wars simply because you have innervate and can cyclone offensive dispellers, and put out enough damage to keep pressure up on the healer. There are quite a few tips for feral pvp in the feral pvp thread.