I will be going out with a group of 6 of my friends (mid-20s) and my folks and i have reservations at both. I've been to both and liked them about equally. As i recall Japonais is more hip but i don't remember the service being so great. Opera on the other hand had great service which made the evening much more pleasurable. While i want to go somewhere lively, it would be nice if the noise at the restaurant was not so loud that we could not comfortably converse. Any suggestions? at this point i only want to consider these two since its pretty last minute and i already have reservations.