"If you're collecting for you it's a very personal decision."
Yes, and I am very interested in everyones opinions and why. You see, people's stories and thought processes fascinate me.
"Depends on whether you have a run in mind or just going for the best condition MOC."
I don't think either. I just want the full run - I am not concerned about the packaging (or even the best condition!) I like packaging with a bit of "life". The only thing I am not fond of is the yellow bubbles.
I think, given a choice, I would prefer the cardback closest to my original figure. (Here is my original R5D4!)
But I don't think I am going to try too hard on that front. I started getting figures on ESB packaging as a little one - So that is my preference I would say at a push.
I don't see myself (famous last words) constantly upgrading the figures for that slightly better look.
EDIT: The Luke X-WIng and Leia Hoth in the photo I am pretty sure were the first figures I ever bought with birthday money somewhere around (I want to say xmas 1981 but it could be xmas 82 - The figures were on 41 back cards IIRC)