even for the same song, sometimes I like the singing from a gig, the solo from another gig, the band's overall sounding from another gig, the intro from another gig, etc...
for most of songs in DS/MK history, I can't choose a particular version, because I can find parts I love (and some I don't like very much) in several versions.
typical exemple is : you like a version from a particular tour because of the intro arrangement, but you prefer the version from another tour because of the outro.
Then, in the same tour, it's even more difficult to choose....