meamwhile, here's what web reviewers are saying:
http://www.thebeijinger.com/directory/Restaurants/Burgers-and-Hotdogs?sort=desc&order=Rating
here's the rankings (roughly .. these are the rankings of the establishments as a whole, not necessarily just their burgers)
1. Maison Boulud
2. Burger King
3. First Floor
4. Union
5. Chef Too
6. Rumi
7. American Cafe
8. Peter's Tex-Mex
9. Lush
10. Blue Frog
11. Nasca Cafe
12. Kiosk
13. Let's Burger
14. Fatburger
15. Luga's
16. Hard Rock
17. Hooters
18. Old Bike Cafe
19. Grandma's
20. TGIFriday's
21. Eudora Station