I ate here on new years eve 2013, i were on a roadtrip from San Fransisco- LA- LV.
I had just arrived at Stratosphere from Los Angeles. So i looked at my yelp app to find the closest restaurant outside of the hotel so i saw that Carls Jr was close. We were met with a friendly face and even though we were tired and typical tourists(in my country a friendly face in a chain restaurant is VERY RARE). I had tried eating a Big Carl burger during my first stop in San Fransisco and liked it quite a bit but was a little bit decided because the atmosphere at the SF CJ was stress filled and a guy was arguing with the security guard for my whole stay.
There is something special with the burgers from Carls Jr and i can't figure it out. It basically tastes like a fine dining burger but is half the price of the ones you find further down the strip or at fine dining restaurants. My favorite is The Big Carl, i've also tried the Famous Star but i prefer the Big Carl.
During my American visit i had decided to try out all the larger chains and then sort of find my personal favorite. If i had to choose one chain for the rest of my life it would be CJ.