Honestly, I think I find the world of live albums a little lacking beyond my favorites. I guess recording quality is always a barrier.
This is very much how I feel as well, even though I enjoy attending live shows.
The one exception for me is Eric Clapton's Unplugged.
There are also a few individual live tracks that I will gladly go out of my way to listen to and that I consider to be the best renditions of said songs:
Metallica - No Leaf Clover, from S&M
Wings - Maybe I'm Amazed, from Wings Over America
John Mayer - I Don't Need No Doctor, from Where the Light Is: John Mayer Live in Los Angeles
Miley Cyrus - Maybe, from Attention: Miley Cyrus
Zaz - Si jamais j'oublie, from Sur la route
Pat Metheny Group - Travels, from Travels
Metropole Orkest - Contradanza del espiritu
Keith Jarrett - Pt. II C, from The Köln Concert