Upmarket 'Chain' burgers.

We've always loved Five Guys, especially their fries so we usually just go there, but this last week we've tried two more places. Last week we got a coupon for Smashburger. DH had a bacon cheeseburger and regular fries and I had the 'seasoned' fries and veggie burger. I couldn't taste the rosemary on my fries but they were lovely and crispy, and I loved the veggie burger, and John was happy with his. We'll go back there again... and today we went to a movie in Boca so I said 'let's try Shake Shack.' We were very disappointed. The caramel shake tasted exactly like it came from Wendys, my Chicago dog was okay but I like the one at Five Guys better. And DH was super disappointed in his burger, which seemed on a par with McDonalds. The fries were nice and crispy though. But we won't be going back - why go out of our way when we can get something virtually the same at Wendys right by our house?

So, what's your opinion? What other burger places should we look out for? There's no Sonic in our area so we can't go there... John's into burgers, I love shakes.