I’m at around 600 hours, and just rolled up Maya, finally. I’ve touched on each character a bit, though Krieg was always my primary focus.
I still find 2 to be the most enjoyable. I came late on 1, and still need to go back and finish a full two playthroughs (including the DLCS) on that. I put TPS down after about 113 hours, and honestly, every time I boot it up to try again, I find myself closing it within 20 minutes, fire up 2, and play for the rest of the night.