WILLIE SCOTT is the best Indy lady indeed!
Although most of you will probably curse me for saying that, I insist with the idea that Willie is the perfect girl for 'Junior'. How many times she saved him and Short Round in TEMPLE OF DOOM? Starting with the antidote episode, then when she woke up (before everyone) in the falling airplane, then the bugs chamber... Sorry, folks, but Indy and Short Round wouldn't last until the end of the story if Willie weren't there...
I know I'm suspect for saying that because I'm a true fan of her, but I don't see many chances of Indy and Marion build a good relationship. She's very boring in my opinion and she's a little 'graceless' in my point of view. Besides that, she doesn't know how to scream like Willie either. I'm quite sure that Indy, despite of his complainings about Willie's constant noise, was totally comfortable with that after the second or third Willie's scream...
And about Elsa: Please! She was a traitor and has been very well dead! Let her exactly where she supposely are right now...
So, my vote goes to the only WILLIE SCOTT!