Fallout New Vegas
I haven't really played New Vegas so I'm kind of biased but I played Fallout 3 for over 80 hours and I had fun every minute of it. Also, the modding community really keeps the game alive.
The plot holes of Fallout 3 are like a door to the story of Fallout 4.
I think the story, choices and improvements in New Vegas make it a "better game", but I still have to go with Fallout 3. Perhaps if Fallout New Vegas was released first then I would change my mind about that. I played close to 1000 hours of Fallout 3 and still remember so much about it. I don't remember a lot about Fallout New Vegas.
Although New Vegas had what I felt was a more diverse set of side missions I liked how dense 3 was. Plus the main story for 3 didn't make it feel as if they just made you go from town to town and talk to every settlement
For me, Fallout New Vegas felt more like a long DLC than an actual game
Although I like the Capital Wasteland better, I like New Vegas storyline and gameplay choices.
From what I found, Fallout 3 defies a lot of the lore and violates some rules, as well as creates plotholes. However New Vegas stays true to the original lore. Both are great games though
More freedom, more choice. The athmosphere is not as good, but the game just felt a bit more developed.
You get more freedom with how you want to win the game, and the in game economy seems more legit. I mean, in fallout 3 fat man was like under a thousand caps in full condition, its like 10000 in new vegas. I also like the look of the mojave desert.
NCR NCR NCR NCR NCR
I loved fallout new Vegas the characters were more memorable so we're the quotes plus my favorite dlc will always be lonesome road
I liked New Vegas better it lasted longer for me, you can play it many times as there are different endings and factions while in Fallout 3 you can only side with The Brotherhood Of Steel