I would've voted for Bespin Han before but I'm happy with ANH Han(now that I have him. Got him a few months back). I voted for Bespin Luke Redux and Bespin Leia. I would've voted 3 but I got trigger happy and didn't read the whole post before voting lol.
Bespin Luke is an easy one as I want to recreate the dual in figure form/photos/etc. with a Vader figure. Everything about that scene IS Star Wars to me and I need it in my collection. The original looks good but it's so expensive as to be unattainable at this point. Bespin Leia I want because I want a "regular" Leia(I have New Hope one which I love but it's a very specific look from the films. Bespin works as a more status quo Leia look). I originally was going to buy Hoth Leia but didn't think the final product was as great as the prototype.
Had I voted a third figure, It'd have been X-wing Luke which after all the Lukes we already have(or are getting soon anyway) is easily the most iconic Luke.
Also, guys I want a Lando too like you wouldn't believe but I think the point of this thread is just Han/Luke/Leia. The less cluttered it is with others, the more we send clearer messages to the people who might be in a position to move this stuff along.