I'll make a pitch for Arms! :)

Arms is a very conditional spec. Where many times a spec is like "234 234 234, oh this happened so press 5, now 234 234 234, etc.," Arms is a much more active spec. It's a lot of "Okay, so I want to do x, so press y... ah so z happened so press w, now press x again because r happened, and so on." It's not terribly complicated, but it requires a lot of awareness of what procs are popping, forcing situations to line up to your advantage, and reacting to what's going on in the fight. It's a very tactical style of playing.

It does have downsides, of course. There's plenty times where it's frustrating because some RNG didn't proc. And on an off day, there's a lot of "Great I'm dead... oh dammit I should have pressed this instead of that. gah!"

Still, none of the downsides really matter if you love the play-style. I've played a LOT of different classes and specs and none are as active as Arms. It really gives the feeling of being in a real fight and using everything to your advantage to win.

So do you like to play Parchisee? Or do you prefer Chess? :)

I'm currently leveling up my 2nd warrior at the moment as Arms/Protection (for instancing) and my other max level warrior is Protection/Fury.

I can't believe how much I'm enjoying Arms. You have mobility, flexibility, an interesting rotation (not to mention fantastic DPS).

I know it was touched on here, but as soon as you get Juggernaut - your game totally changes (in both PVE and PVP). It has made questing much faster!