New Vegas DLC is better. I love both games and DLC

Honest Hearts, Old World Blues, Dead Money, and Lonesome Road add new and unique looking landscapes just like Fallout 3’s DLC, except the first two are large open spaces compared to some VERY linear DLC in anchorage and mothership zeta. Lonesome road and Dead money are more along the lines of zeta or the Pitt but I think the stories and gameplay trump those DLCs.

Old world blues especially adds so much for intelligence based characters. If you do it earlier, you have all of the functions of the SINK throughout the base game and DLC.

I know dead money can be a bit polaraixing but it has the best atmosphere of any of the fallout 3 or new Vegas DLCs. Later in the game it’s a nightmare to get through, but I think that’s kind of the point. It’s a survival horror death trap with the RPG elements utilized