Always liked the Burger King flame-broiled Whopper, had a great charcoal flavor. Recently the very worst burger I think I ever had was from BK. I even went back a couple times thinking it was a just a bad day but nope. I'm over that. For a quick fresh tasty hamburger now it's Wendy's.
5 Guys is pretty good but you have to park and go inside.
For a great sammich though if youre in Jacksonville stop by Lubi's on Beach Blvd and get a Lubi. And wear a shower curtain cause it's kinda messy.
Place is a dive but the food is quick and excellent