So for the first two songs which are both Title and Registration, one being the album version and the other the original version, I personally would have to choose the album version rather than original. Though they both are great songs by Death Cab. They really have the ability to contend with the great ones like I Will Follow You Into The Dark and Crooked Teeth.
The other song World Shut Your Mouth is really nothing that great. Once again, a very obscure song by Death Cab. I understand that you have to step outside of the "genre-zone", but it is songs like these that I really do not care for.
Great single, you get two versions of a great song. Enjoy.