Two quick comments. Ate at both these restaurants last week and had two diverse experiences.
Aquagrill was just great. Food was wonderful right through desert. Service was great. I was with my wife and two teenage sons who can be very picky eaters but the wait staff bent over backwards to make them happy. All in all a great meal.
5 Ninth was another story. Went there with two other couples and we all felt the same way, A complete dissapointment. Pretentious uptight staff, from bartender to waiter. The menu was weird and the food mediocre at best, not to mention grossly overpriced. Cannot understand what people see in this place.
Just my opinion