Hunter's double jump is nice since you can easily remain airborne for a bit and change directions easily. Warlock's glide feels good when trying to shotgun or simply bait people. Otherwise, the speed isn't the best. Titan's lift feels awesome mostly because of the speed in,which you can close a gap. That way, shotgunning feels more fluid and more consistent. As a whole, I prefer Hunter's double jump mostly because of the ability to juke your opponents.