It's important to remember that when you go for all you can eat sushi you can't expect quality. You have to take it for what it is: quantity. Zushi Sushi is your typical AYCE sushi experience in that the food is nothing to write home about but there is a ton of it. I found it pretty tasteless but I've come to realize that these days when I crave sushi I would much rather pay for quality and get less of it then stuff my face on AYCE sushi.
Like all AYCE sushi places you pay more on weekends and there are fees for uneaten pieces. There service is pretty fast and they usually remember to bring everything you ordered. Just a heads up that it is cash only so make sure you have enough on you. If you forget they have an ATM in the restaurant.