Should I buy Duke Nukem Forever or Deus Ex 3?

Im sorry to say but I wouldn't buy either, its not that Duke doesn't live up to the expectations, its just that its a terrible game. Also Deus Ex, while i haven't played looks and sounds very average, which is disapointing. If I was in your position i'd try an older game to keep me occupied until Battlefield 3 or Skyrim.