Chako has excellent customer service - they are so speedy! Plus, they check up on you frequently. I always go for All You Can Eat and I find their dinner selection is better. Also some sushi available. This is one of the better places for Korean BBQ as their selection is wider than some other restaurants (however, weekend dinner has the best menu and is the priciest).
RECOMMENDED: Lamb, Beef, Short Ribs, Salmon
RECOMMENDED APPS: Tofu, Seaweed Salad, Soup
TIP: to save, go after 10 pm for their late night special. Selection is not as wide as regular dinner, but it will save you a couple of bucks!