A few years ago I would have said it was a tough choice with Ohana getting the slight edge. Since the menu changes at Ohana, I would definitely choose Kona. We have dined here many times for all 3 meals and everytime it has been excellent.
I agree with most of the previous assessments......better food at Kona and more crazy kid activites at Ohana. Personally, we love Kona and find Ohana to be nasty (big ole gorgefest with "eh" food).