If you really want to do some serious Asian grocery shopping, head to the Ranch 99 market. It is an Asian superstore and there is so much to see and to look at. It has great produce, meat and seafood, and baked goods departments. If you EVER want live crab or lobster, you've got to go to this market, because it is absolutely the lowest price you can find around. All sorts of whole fish, clams, crab, etc fill refrigerated cases and fish tanks. Also, there is an instore BBQ where you can get roast duck, roast pork, etc. The bakery goods, especially the delicate sponge cakes are wonderful.
Beware, it is super crowded on weekends, although the food is probably the freshest then. As for customer service, it's an Asian grocery store, so don't expect any.