Some favorites are:
Iron Maiden - Rock In Rio
Full-on energy, great production, great workout music. I think this is the definitive live version of Fear of the Dark.
Iron Maiden - Maiden England
Setlist isn't the best as it's only 13 songs and the production is wonky. However, I love the production. The bass is turned up super high and has a "clack clack" sound but I think it sounds cool. Check out The Evil That Men Do and listen to Steve shred on the bass. Also, Bruce my not be 100% vocally but his energy is great. I would say that this disc has the definitive live versions of Die With Your Boots On, Evil That Men Do, and Still Life (duh
Heaven and Hell - Live From Radio City Music Hall
Sure Dio shows his age a bit on this one but the performances and set are great. I think it's a more interesting release than Live Evil or Live at Hammersmith.