I've been to Rockies burgers quite a few times. I would recommend trying it at least once.
Their claim to game is their 10 oz burger patties. I can eat a ton of food and I can't finish their special which is a single patty. The double is the size of two m and I can only manage one, so unless you're feeling extra specially ravenous, I'd stick with the single.
The beef is good quality. The patties are made on site. The fries are quite good also. All in all its a super solid place.
The one thing I would change if I was running the place is I would toast the buns by default. Other than that, I've always walked away happy and full.