Let's not get uncivil, both are 900 page megathreads with releases getting damned close. If you feel the need to explain your choice keep to facts/avoid bashing etc, etc.
We all know this site is a VERY pro WoW so I expect the 3rd option to get quite a beating too, also I believe wildstar is more of a WoW flavoured mmo so it will be interesting to see how this one shakes out.
All the same, let's cut the crap - it's choices time
Edit: If you will be playing/buying more than 1, pick your favourite.