I still prefer the Fallout 3 story stuff. (tranquility lane was beyond epic) New vegas is good but I feel I got more out of the F3 dlcs equipment wise. MZ was cool if only for the katana,samurai gear and a revolver without a scope!. (I also recalled Ulysses being a part of cut content,no?)
Agree that tranquility lane was amazing (one of the few things story wise that was in FO3), however it was nearly ruined by the epic fail of a reunion between the lone wanderer and his/her beloved father. That was a F minus.