First off, I've also experimented with all three builds post 1.2. I was really surprised because all of them are viable now. I'm annihilation most of the time, but I have also played rage quite a bit. The people that mock you for being rage spec are morons. It is extremely powerful if played right. I can say the same for annihilation.
Unfortunately I see the DoT dispel becoming a real problem in rateds, so I'll be prepared to switch to rage unless some sort of unstable affliction type ability is introduced.