What is truly the best fast food burger in your opinion, and what makes it so great?

I agree with all of this except local because that ain't in my locale.

For me, local would go to Tasty Burger in Boston, when I lived there.

This is the first sane answer I've seen. Shake Shack has a drive thru where I live, and puts all other drive thru burgers to shame. Also Whataburger is very mid. Texans need to get out more.