Being a huge fan of the Miami Heat, and an all-time Alonzo Mourning fan.
Any bordered refractor #ed 1/1 would be my white whale, or a 90's insert #ed 1/1 also, although it'd have a hard time competing with a Mourning auto/patch from exquisite #ed /50 or less.
Also see - Delonte West Logoman Auto Rookie #ed 1/1 (one of my all-time favourite players in the recent years)