Fallout 3 or Fable 2 ?

Im wondering which game i should get between those 2. I really liked Oblivion ( I spent about 76 hours in it), but I also really liked Fable 1. So in your opinion, which game should i get.

Note that i really like spending a lot of hours in a game, especially RPGs.

Thank you !

Moderator Note- Please use the game recommendation sticky for questions pertaining to which game you should purchase.

This is a very easy question to answer, Fallout 3 is ungodly better & much more enjoyable compared to Fable II.  I suggest buying Fallout 3 & picking up Fable II as a weekend rental.  Good Gaming!!!

Beat Fable 2 already. It isn't as long but it is a good game.

Lots of exploring in Fallout, long amazing game.