Ru Sans is great if you're looking for lots and lots of affordable sushi (their lunch buffet almost cannot be beat). However, what separates Ru Sans and a 5 star experience is their wait staff. Most are very stoic and borderline rude. About midway into our meal we were handed the check and thereafter the waitress proceeded to ignore us for the remainder of our time there. I was rather put off, but the food makes up for the goodwill shortfall. Overall, I will go back, but with the understanding that service is not their primary (or secondary) concern.