We ate at Wah Sing today, and had Shanghai noodle and stir-fried beef and snow peas, for total of ~$40. Food looked and tasted okay overall. The snow peas tasted good. Beef and celery tasted not the freshest, but edible.
Not Just Noodles offer similar or better food for cheaper price. Wah Sing's food was okay, not the best, not as sophisticated as e.g. Congee Queen, but it was okay.
Overall, we enjoyed the experience. The place was clean and not too loud, and staff was friendly.