Hands down, best sushi chain. Top notch quality fish/dishes and pretty pricey. But who cares when you're on the strip; expensive is expected. :P
Nobu stands out from the rest of the sushi chains because of their creative entrees. Based off their Chilean Sea Bass and Black Cod dishes, I'm quite impressed and have confidence that any of their dishes would be a good pick. These dishes were well prepared and were not drenched in sauce. Their raw fish tastes as if it's fresh from the ocean; definitely close to what you can get in Japan. However, the quality of their fish is what closely resembles Japan not the restaurant itself as their menu, interior decor and waitstaff is like any other American restaurant.