From 1984, the best recording is from Sun City. It's a soundboard recording. Kind of dry, probably a couple gens from the master, but still quite excellent.
The best audience tapes from 1984 are from Birmingham (third night), Milan (either) and Vienna (first night).
1985 has official releases from Rio and Tokyo. The best-sounding audience tape is from the Osaka show. Actually quite stunning for an audience tape of any age.
They're all available here. Search the announce section, or start here - http://www.queenconcerts.com/collection/downloads/1984.html http://www.queenconcerts.com/collection/downloads/1985.html
There are a dozen or so recordings worth hearing, but if you want to pick just one, weighing sound quality vs. performance, Sun City is the one to get. But it's just the first half of the show. Grab Osaka from the Masterport bootleg too.
"The more generous you are with your music, the more it comes back to you." -- Dan Lampinskihttp://www.queenlive.ca