Survivability-wise Rage and Annihilation obviously take the cake. Carnage, though, has enough burst and added control to shine quite a bit. With the recent change to Annihilation's damage I feel it's a little less worse relatively, if that makes sense.
In the end, just like in PvE, you can really get away with using any spec. It just comes down to knowing the ins and outs of how to use it as well as knowing how to approach different classes.
I try to stay Carnage as often as possible because I like it the most, however for Nightmare content so far - specifically Bonethrasher - I can't simply because of the Ataru range bug :[