Story wise, BT has been the best I've done so far. Hammer Station was easy, and honestly too short. Athiss, was great in terms of fun though. The first boss is a joke, but the Beat of Vodal, and Vodal himself are great fights. Still think its a bit too easy, we did it with 3 level 21's and a companion (Khem Val for the beast, and mako for last boss)
Mandalor Raiders is a bit tougher but I think they are fun atleast.