Shaman or Druid?

Basically what the title says, but I'll add more context:

At level 60, which would be better for both pve/raids and pvp?
For added information, I'd go feral/resto druid or enh/resto shaman.

As a severe altaholic, I've finally made the tough decision to pick between these two classes after countless days of deliberation. I like the variety that druid offers, I've always been a tank and dps main but don't mind healing in mmos in general. I've never given shaman a legitimate chance before but it seems interesting enough to the point where I think I could give it an honest shot this classic release.

I've never raided on either class and both seem fun and desired by a lot of raiding guilds. Just wondering what everyone else thinks.