Most people like one over the other for entirely different reasons. I'm undecided about which is better so all I can do is give you info on both, for you to decide which you like the sound of more.
New Vegas has far many more side quests than 3. However, the few side quests in 3 were lengthier and seemed better written than the many in New Vegas, which I consider a point in 3's favor (but some people prefer lots of short side quests over longer ones).
New Vegas has the better plot in general, but 3 has a better beginning and is more immersive.
New Vegas has a Hard Core mode which makes for more interesting game play. For instance, ammo weighs something in your inventory making you ration how much you carry around (like everything else) and food/water/sleep is necessary or else you'll be suffering for it. Also injuries are a bigger deal in this mode.
I haven't played all the DLC for each so it's hard to comment on that - both had at least one DLC which I really enjoyed.
I don't know why but I found 3 much harder to get-by at the beginning. Raiders could kick my ass which made them all the more threatening and me all the more cautious (which I kinda enjoyed). In New Vegas, I was kicking ass & taking names from the get-go. It doesn't take long at all to acquire semi-decent weapons.
Some people vastly prefer the companions of one game to the other. I slightly preferred the New Vegas companions but not by a whole lot.
New Vegas has far many more side quests than 3. However, the few side quests in 3 were lengthier and seemed better written than the many in New Vegas, which I consider a point in 3's favor (but some people prefer lots of short side quests over longer ones).
New Vegas has the better plot in general, but 3 has a better beginning and is more immersive.
New Vegas has a Hard Core mode which makes for more interesting game play. For instance, ammo weighs something in your inventory making you ration how much you carry around (like everything else) and food/water/sleep is necessary or else you'll be suffering for it. Also injuries are a bigger deal in this mode.
I haven't played all the DLC for each so it's hard to comment on that - both had at least one DLC which I really enjoyed.
I don't know why but I found 3 much harder to get-by at the beginning. Raiders could kick my ass which made them all the more threatening and me all the more cautious (which I kinda enjoyed). In New Vegas, I was kicking ass & taking names from the get-go. It doesn't take long at all to acquire semi-decent weapons.
Some people vastly prefer the companions of one game to the other. I slightly preferred the New Vegas companions but not by a whole lot.