Bird was a player who really improvised, conceived very different solos in each take. In that respect he was largely superior to his sidemen who often had to learn the tunes during the session. So all alternates merit listening, although he sometimes lost interest while the other were still finding their way through the tunes. I for one like both approaches to listening, just for Bird's incredible creativity, but listening to the music as the jazz world first got to hear it is hard to beat.