All 3 are good, and all 3 are good in pvp.Is there a census of class popularity out there? I'd guess its hunter/warlock at the highest with titan at the bottom if anything?
I'm thinking a Titan as an alt might be kinda neat after watching that hard mode video
The perfect group is the 3 classes together.
All 3 classes in pvp are devastating if played by a good player, Hunter is definitely the scrub friendly class due to fusion rifles.
So if you think you might not be that great at pvp pick a hunter.