Of all the grocery stores in Madison, this is my favorite to go to. It doesn't always have the best prices; however, if you're paying attention they've generally got great deals on a lot of items.
Overall, though, the store is clean, well-lit, the staff is extremely friendly and helpful, and almost anything you could need grocery-wise can be found here. I especially enjoy their produce section. It's also easy to navigate, and if you can't figure out where something should be, there's usually someone around to point you in the right direction.