I also recommend going for the "unrated" version...I don't say this because I'm one of those people that feels that the more gore and swearing the better...it's because, like Live Free or Die Hard, it was cut down to PG-13 at the last minute. Therefore, I found some moments to take me out of the illusion of the movie because I was too busy thinking, "That was an awkwardly cut piece of dialogue..." or "Something was supposed to be there, but they must have taken it out."
Disclaimer: I'm not saying that these things were through-out, or that I'm a nit-picky person. I'm just saying that, given the option of the theatrical version or the version they intended to release, you might appreciate the 'smoother' version.