I bought both. I found something interesting, I imported both, and when I open the US versions there was a E Reader card in there that you can use with the game. I wonder if Nintendo added this on for the US version since I do not remember anything like this in the Japanese version. (But then again I can't read Japanese.) Because it seems like a good way to add a little more plaiblity to the games. (If you have an E-reader which I have been planing to get.)