We went for lunch right at 1100 AM on a weekday. The service was great. I had read the service wasn't the best, but being there early was probably a big plus since hardly anyone was there yet. Food came fast and waitress was great.
I had the Lushburger classic and a chocolate thin mint shake. Both were really good. I'm downgrading my rating though because I don't like that they default to dry crunchy chips instead of fries. This is America. We want fries as the default with a burger! I saw later that the menu does say this and the waitress did ask me if I wanted fries when I was ordering, but I was confused how she said it and didn't understand until I got chips instead. bleh. Also, if you do want fries it's $2 extra! $3 extra for sweet potato fries. This makes a traditional burger $12-13. A little high for what you get, IMO.
In general though, good quality burger and great shake!