Okay, it's not a steakhouse per se, but the best strip steak (my personal favorite cut) that I've ever had in my entire life was at the W hotel in Honolulu. Man alive, this steak was absolutely perfect. I think they paired it with a bordelaise sauce. It was cooked perfectly, juicy... I'm in heaven just thinking about it. The veggies and garlic mashers that came with it were yet again perfectly cooked. The whole meal was perfectly executed... as it should be, seeing that it was the most expensive meal that I've ever had in a restaurant.
It also helped that the restaurant is outside on the beach and we were there at sunset