I've been here quite a few times. The food has always hit the mark at being decent, obviously not as good as authentic sushi places which I love, but it's still good. My personal favorite is the Alaska roll (complemented with nice cuts of sashimi). However, I've some some horrific experiences at this place as well.
First of all, it's always packed like mad during the dinner hours. Expect to wait 20~ minutes if you arrive there after 7pm. There's not a lot of seating area either so privacy is nonexistant. The staff are nice however, and I've never had a huge problem with flagging servers down and they are very helpful as long as you understand that they have like 50000, exaggeration of course, other customers to tend to at the same time (take-out, phone, cashier, packed dining room).
The worst experience at Sushi garden was one night when I decided I wanted to just order two Alaska rolls to go. Our number was given, 085 or something along those lines. After 20-30 minutes and seeing some tables come and go, it was getting extremely aggravating to still be standing in the middle of the restaurant. A few minutes later, I heard 086 getting called out and 092 getting put onto the counter. Honestly, I just wanted my Alaska rolls. After talking to the waitress, she apologized and told me she would check what was going on. It was apparent from the look of dismay and frustration on her face, as well as from my glances at the sushi bar, that the kitchen staff were really just screwing around and working to their own turtlish pace. I guess to them, a packed restaurant means you need to slow your pace down? Whatever.
I left 5 minutes later after finally getting my order a long with a random complementary salad for the wait. The only reason I am coming back to this place is because I believe this was an isolated incident and it's treated us well every other time.
I hear they have a special "Korean style Spicy Chirashi Don" that comes in an enormous bowl that is not on the menu. I'll probably try it next time I go.