We have eaten at both. If I had to pick, I would go with Kona. I had some kind of steak at GFC. It was good but not fab! I had steak at Kona and it WAS fab! Another time I had the shrimp and scallops and it was also FAB!!!! I must say that, in my opinion, the service and theming are really not great at either, but the food was better a lot of other restaurants in "the world"! My vote is Kona! It was a BIG surprise to us, and again, just my opinion, but I think it's a great "find"! We ate there the first time, because we were back at the hotel early and asked to get in and we could. We canceled another ressie somewhere else to go back a second time because we liked it so much!!