Five Guys is disgusting to me now. I ate it on and off from 1999 to 2013 and at times, I was obsessed but I seriously can't get excited about it anymore and haven't for a while..
Burger Fi is awesome and I'd really like to try Elevation Burger. It's crazy, I was just in Socal (LA/Venice/Santa Monica) and it was amazing how many places were green/grass fed/healthy. Seems like you have to TRY to eat bad(if you want to).