I'm on the "Portillos is alright" train. I was told it was amazing, etc etc and it's not bad. It didn't live up to the hype it received, to me.
As for fast food burgers: Wendy's has always been one of my favorites.
Whataburger has some fantastic options as well (also huge servings if you're looking for it)
In n out is great too and well priced.
Five guys... not a fan... don't like the price per burger/meal. The way they a la carte everything makes it too expensive for what you get, to me.
Habit Burger has been a good recent burger I've tried. Love the fries as well.
It's a whole meal experience for me... burger, fries, drink. A symphony of flavor
haha.