Vegas Trip Dinner
Sage is definitely one choice and you can definitely eat well there for under $100 - even with a glass or two of wine. People are always talking about the $45 special at Charlie Palmer's place. Wicked Spoon at the Cosmopolitan also works. Frankly you have lots of choices depending on what your "big eaters" like. If decor is less important, Lotus of Siam would also be great.
Lotus of Siam
953 E Sahara Ave Ste A5, Las Vegas, NV 89104
We had a pretty mediocre meal at Sage a few months ago. Rather unimpressive service, and very sadly, a total neglect of the 25th anniversary that we informed them in advance we were celebrating that evening...very disappointing. But even our food wasn't great! Did we just hit them on a terribly off night??? We really are not inclined to return, but we've heard so many good things about the place.