I would absolutely choose 'Ohana everyday and twice on Sundays. When we did Yak and Yeti, we were terribly disappointed. It wasn't that the food was bad, you see, because it would have had to have had flavor in order for it to be bad. The service, however, was bad. We are Landry's Select Club members so we get a survey after we eat at one of their restaurants. We told them we were disappointed and received a phone call from the manager apologizing and asking us to come back and give them another try. When we went back, he made all of his recommendations, we ordered those, and still disappointed in the overall flavor.
'Ohana, on the other hand, has never disappointed. The food is always excellent and the service has been fantastic. We love the atmosphere, as well. I definitely would recommend you stick with 'Ohana over Yak and Yeti.