Without question. Korean as well. And Thai. But classical Japanese cuisine is at least on a par with French as far as subtlety and nuance go as well as bold and full flavours. The French have never really understood fish. The Japanese have never really understood dairy and meat. Knowledge of both cuisines can deepen everything else one does. I can cook Vietnamese, Thai, Korean, & other nearby cuisines. (Don't tell anyone but I'd give up French food before I gave up Southeast Asian food.) But I've never cooked any Japanese to speak of. And no one's followed up on my mention of Indian. Replace Indian with Japanese on my working list?