Many Las Vegas, NYC, and Chicago restaurants are helpful or excellent for sushi. Here's a list of some of the best sushi restaurants in both three places:
1) Umami - Las vegas.
2) Sakana - Las vegas.
3) Sapporo Revolving Sushi - Las vegas.
4) Rakuzen AYCE Sushi - New york City.
5) IchiUmi - New York City.
All these restaurants are the best where best all you can eat sushi las vegas if you want more information about all these you can visit the overhead link.