I live very close to Gal's sushi and I have been here a few times as well as ordering take-out from this location. The food quality is generally good to very good so I do enjoy coming here.
We would often get the sashimi and sushi combo. It is reasonably priced and the fish is fresh. We would also on occasion get the kitchen/bbq items which are also very good. Their Korean food is overpriced compared to some other Korean specific places like Nok Wan or Owl of Minera. Otherwise, overall, we enjoy eating here.
The 3 stars however is because the service that I have received the few times I have been here. They are a very busy restaurant. At any given meal time (especially dinner), it is a given that you will have to wait for a table. Because of this, I would expect them to have more waitstaff at the place. They have 1 or 2 manager type and maybe 1 or 2 more waitstaff. Because of this, often you would have to wait to get someone's attention.
It is always good to call for reservation when you can. Their take-out is good and they give a cash discount.