The food is all good. I'm not a huge sushi fan, I can handle it in moderate doses, but this place ranks as an exception. It's always prepared to perfection and apart from the tempura, which I can't stand, everything else I've eaten there has been quite good.
The service, honestly, is mediocre. Their delivery is lousy and attention to the tables is just poor. The food is brought out very randomly, typically all at once just filling the table. You have to flag someone down to get your drinks refilled or re-order.
Value is there. All you can eat of very good quality sushi is a very fair deal. It's worth going. If you don't like sushi you can choose items from their grill which are good as well. Don't worry about portion size, it's a non-issue. You can eat as much as you want and keep ordering until you've had enough.
Definitely check it out.