From both, my favorite tracks:
http://www.youtube.com/watch?v=WB5VnEo2604
http://www.youtube.com/watch?v=KlUkvrYtWRk&feature=related
http://www.youtube.com/watch?v=kzZ3UNXp0YQ
http://www.youtube.com/watch?v=kDpEDdB0Oro
http://www.youtube.com/watch?v=r5APshEyS68
Hard to choose any one of them over another, but I suppose overall I like more New Vegas songs than FO3 songs.
Also I dun care what anyone says, I like Johnny Guitar.
