I would give H20 a 3.5 if I could.
H20 offers a lower cost version of sushi that is good for many but maybe not those who seek real sushi grade sushi. I think that the "all you can eat" for $25 is great for many people. They do an excellent job of presenting a good value for a sushi dinner.
H20 is hidden off of Flamingo in a new strip mall at the edge of Hughes Center. In order for inexpensive sushi to exist they need volume. I was alone at the sushi counter and there were only a few other customers in the very large and empty dining room. I think that is due to lack of marketing more than any thing else. They are not five star sushi, but they do serve good sushi and other things.
I ordered three sushi types: salmon belly, tuna, and yellowtail. I also ordered the H20 roll, the chicken and pork belly skewers. They were all nicely done, but the fish where not the top grade. I really want to say that I am not criticizing them at all. They do an excellent job at the price point they are selling into. For me, sushi dinners often cost over $100 and I consider sushi one of my most expensive dinners. H20 offers an all you can eat sushi dinner for $25. Based on that criteria they should get 5 stars.
Although I might not return, I think that they are addressing a legitimate market for sushi for those who want a less expensive alternative. They are a chain which is hoping to expend the taste for sushi and that is a very worthy goal. I hope that they can come up with a plan that gets them noticed.