Yeah usually see either Hunky Dory or Ziggy Stardust listed as his best. I can agree with Hunky Dory, not Ziggy. For me, Scary Monsters, Low, Aladdin Sane and Blackstar are better than Ziggy.
Good choice. It is still insane to me to think that he started to record Diamond Dogs in early 74, then did a major tour, then recorded Young Americans, made a movie, recorded StationToStation, then another major tour and wrapped up recording Low all by the end of 1976. Cocaine, its a hell of a drug.
Station To Station should always be in the Top 3 at worst. The other one that gets overlooked more times than not that should also be there - Scary Monsters.