Tanks

[Colpach]

I want to play a tank type but I can't figure out which one. To me, it seems like it's between 2 choices, warr or sk/pally. By that I mean warr against pally or sk. Both pally and sk can keep a good aggro in my opinion with their spells, where as a warr will count on taunt and procs. I remember seeing a lot of warriors on live and even here be main tanks on raid events, why is that? when it seems like a sk/pally would do a better job at keeping aggro. Just looking for more information on the subject for making a good choice.

Thanks