We have lived in the area for years and have tried several teriyaki places. We were told to try Sunny's by a friend and have never been disappointed by the choice. The restaurant has great value and food. I keep a menu in the car and call on the way home for a pickup. I recommend you have the chicken/beef combo or the gyoza (3.99 10pc - that's a value). My daughter that is a picky eater loves them. I personally recommend you check out one of their "daily specials". they usually give you chicken teriyaki and an additional choice with all of the usual sides. GREAT VALUE.
Final things: You will want to ask for additional teriyaki sauce, it worth the extra .25 cents. They have a card that gets you free items from time to time. You have to ask for it, they dont offer, but a free meal after 15 is worth the asking.