If I had to pick a top 3 it'd probably go something like.
1. Key Lime (so long as it's made right, Key Lime's that're too sweet are terrible imo. Gotta be the right combo of sweet, tart and sour.)
2. Apple (especially w/ ice cream...mmmm....)
3. Boysenberry (basically impossible to fuck up)
I think I might prefer salty pies over the sweet ones, but from the poll I'd pick blueberry. Though I've also never tasted most of the pie varietys included in the poll, only apple and blueberry. Strawberry pie is also quite good from the sweet ones, also eaten a lot of raspberry pie as a kid but not really a fan. Bit too sour for my taste, same goes for lingonberry.
Don't really care for most fruit-based pies these days. Which is kind of weird, because I love fruit like apples. But I don't really care that much for apple pie, for instance. I don't think it's terrible or anything though, I just don't really care for it one way or the other. Not sure why really, just don't.