Kona definitely. I've gotten slammed so many times for saying that I thought it was terrible, but it was. The wait is long. The service is rushed. The food is cold and seems like it was sitting under heatlamps.
I do, however, enjoy the sushi bar at Kona. You just seat yourself (first come first serve) so no real wait. You can also REQUEST the sweet welcome bread and they bring it out. They offer the full kona menu there in addition to the sushi. But, sadly, everything that came out of the Kona kitchen was cold when it came to us there also.
So I just stick to the sushi and welcome bread.
I've heard a lot about the tonga toast but I saw a recipe for it and it's just deep fried sourdough bread (not even french toast style) with bananas in it. If I really decide to ever try something like that for breakfast, I'll get it downstairs at Captain Cookes (they offer it there too) for half the price.