I've eaten at both and while Nine Dragons is OK, I much prefer Tokyo Dining. I ate there this past May and had the Ginza Gozen (or maybe the Bento Box, I forgot, sorry). Anyway, it came with several pieces of sushi, tempura, seaweed salad, and rice. It was alot of food and very good. The three people I was with all had tempura and really enjoyed it. They had ginger cake, while I had the green tea pudding. The green tea pudding looks sort of nasty, but was really, really good. I already have another ADR at Tokyo Dining for my upcoming Sept/Oct trip.