DO NOT FACTOR IN RARE CANDY.
All of the candy is already invested - just talking sheer Stardust investment right now. All will be powered eventually, but which do I power up first? Which has the most immediate use? (And please don't tell me "none of them")
100% Blissey: Level 33->40 (128,000)
93% Ho-Oh: Level 20->30 (75,000)
???% Suicune: Level 20->31 (85,000)
98% Groudon: Level 20->40 (225,000)
98% Kyogre: Level 20->40 (225,000)
???% (2nd) Mewtwo: Level 20->40 (225,000)
98% Moltres: Level 20->40 (225,000)
100% Aggron: Level 26->40 (186,000)
100% Tyranitar: Level 26->40 (186,000) [Leaning away from this option as I already have a pretty good Mewtwo team]
100% Gardevoir: Level 20->40 (225,000)
What are your thoughts? I'm personally leaning towards Moltres, Groudon, Kyogre, and/or Blissey.
By the time this post gets responses I should have around 700k Stardust to work with.