I was just wondering. How many versions of this track there're out there?

Until 2004 we had this ones:

1. Real Life (Album Version)
2. Real Life (Radio Mix) - My favourite.
3. Real Life (Instrumental)

Then in 2004 the boxset was released and we got Real Life on it, but I've read that the version on this one was a new remix but I really don't find any differences (the boxset is a bit longer, though). Which are the differences? I'm asking because the differences between the Radio and the Album one are really big. There is other version out there?