I prefer bootleg shows over official live recordings, with the exception of vinyl releases of live albums.
some of my favorite live albums, can't really chose my 3 fave:
Rush-Exit Stage Left
Rush-ATWAS
Deep Purple-Made In japan
Scorpions-Tokyo Tapes
Judas Priest-Unleashed In the East
Iron Maiden-Live After Death
Journey-Departure
so many more I cant think of right now.....
Rainbow-On Stage