I just came back. We had steak twice -- once at Grand Floridian Cafe and once at Le Cellier. GFC was a better steak. The restaurant is beautiful, too. It's quieter than LC and has a beautiful view of the lake. Service was very good. GFC was a great experience.
I've had dinner at Kona, but not steak. Kona is sort of open on one side, so you can see the lobby. I like eating there, but the environment isn't as nice at GFC.