Smashburger reminds me of a.. upscale Carl's Jr, the seats and decor are levels ahead of Carl's Jr.
I ordered the Sin City burger since it has egg, and recently I had Fukuburger's tamago (which also has egg), so I wanted to do a comparison of egg burgers. Honestly the Sin City burger was way too salty, after finishing it I downed a liter of water. The bun was different, in a good way and the patty was tender. The 1/2 lb burger @ $6.99 was a fair price, but the Tamago at fukuburger ($5) is a better value for a less salty version.
The smash fries were good, when you add them onto a sandwich it is only $1.79 and you receive a fair amount.
I haven't had anything else on the menu, but I would stop by here for a burger if I was in the area.