Besides, US English has become the standard version of English spoken worlwide. So somehow, it's more and more a normalized form of English than what you might imagine it really is. And it's internal differences are more and more subtler with each new passing generation. You can thank your medias for that.
Once again, the US aren't the center of the English-speaking world. Ask any foreigner, I'm sure (s)he'll tell you quite the same story.
Probably one of the british ones, for me, the proper one. Sounds very haughty and pompous. Whichever one Christian Bale has is the one I like. Favorite is probably Aussie accent. How can you not like that?
Aren't these poll results just going to reflect who among the respondents is/is not from what geographical region?
And this is why I think a foreign ear that has no cultural/musical bias about what spoken English is has a better chance to be slightly less subjective than someone who speaks English as his/her first language.
"A man who only drinks water has a secret to hide from his fellow-men" -Baudelaire