I have tried them all, the Angus Burgers from Burger King and McD's, the 6 dollar burger from Carl's/Hardees and none of them seem satisfying. Jack in the Box (yes, you heard that right) has a great Sirloin Burger with Cheese. I ordered one on Thursday and I was surprised when they gave me a choice of cheese (American, Cheddar, or Swiss) and Onion (grilled or Red). I was already impressed. I took swiss and Red onion. The hamburger was very satisfying. A little steep on the price, but worth it to me. I had another one yesterday. Jack and the Box is changing for the better.