I only have three and their all on Vinyl.
The Rising Of The Zeppelin - Good stuff but not going to blow anyone away.
Soundcheck July 5, 1973 - Really good and unique. Very rockabilly. Not like anything else I've heard by Zeppelin.
Bonzo's Last Stand - Said to be the final time Led Zeppelin ever played together. A rehersal a few days before Bonham died. Not amazing, mainly for collectors. Still good stuff.