In Vegas try Brian's Beach. Fort Apache and Flamingo, I believe. South/West corner. They have all you can eat sushi for $27.00. Not the most expensive but very good for the price. I go there every time I am in Vegas, after living in Vegas for 8 years.
"If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts he shall end in certainties." Sir Francis Bacon