seemed like a fairly standard live rendition of the song.
don't see anything special about it or why it would be "the best version"...I guess if the other live performances are worse it could get that title...what I'm trying to say is that I don't find it to be particularly better than the album version.
In Utero's my favorite nirvana album (studio of course, unplugged is their best), i love how darker it is compared to what else they did, this song being no exception.