I don't do a lot of Kroger shopping, but if I am going to use my bike, I head to Ghetto Kroger. My friends live right around the corner and can watch my bike for me. Even locked up at the store, it's not save in either Kroger location, really.
If I'm taking the bus or walking, I usually head to the ERD Kroger during "off" hours. I don't really find them much different, really.