Live 1964 is good fun, but there's three songs where he messes up/forgets the lyrics and makes a joke about it, which is funny the first time, but less so the next. There's one song where he shouts to be funny too, though I'm blanking on which, as it's been a while. Baez's singing on "Silver Dagger" is geeee-orgeous, though.
Haven't officially heard the Blood on the Tracks one, but I've heard those early versions of the songs before, and they're pretty good. "Up to Me" is of course the same song as "Shelter from the Storm," but with completely different lyrics. I think all of the redone ones for the album are better.
Live 1966 and 1975 rule the world, imo.