The boys and I have set out to find the best Hamburger joints in Bangkok. I know of some we are going to test, but if you have others to recommend, please let me know and I'll try to go.   Stop 1: Duke's Express Emporium Shopping Mall, 5th Fl., Tel: 087-002-9214, Website: www.dukesbangkok.com   This place is tucked away at the back of the 5th floor food court. I have been to Emporium many times and never seen it. You need to walk all the way to the back of the court to find it. It has o