I found Five Guys burgers a bit average.
The chips are great and worth the entry as they say but the burgers don't match up.
I still prefer GBK, especially when paired with their peppery onion rings and vanilla milkshake.
...but... GBK tends to be a bit hit and miss depending on the location.
Five Guys has it beat on consistency.
I've been to three spots so far and so far so good.