Great Chicago restaurant search

If you're really doing the all-out expense account thing, Charlie Trotter's is widely considered to be one of the greatest restaurants in the United States today (Trotter himself being considered one of the greatest chefs).  Not cheap.  Prix fixes at something like $90, $125, and $150, depending on when you go and whether you eat at the table in the kitchen or not.  Wildly creative food and perfect service, from what I understand.

Someone wrote:

> Hello,
>
> The last time we visited Chicago on an expense account we ate at the
> Everest Room and had a wonderful dinner.  Can you suggest similarly
> elegant places with wonderful food, wine, and service?
> Thanks in advance for all your suggestions.
> Sharon

>My wife and I have hit Everest, Trotters and Ambria, however for my money
>the best food and dining experience I have had in Chicago has been at "The
>Dining Room" in the Ritz Carlton. Chef Sarah Stegner is top notch and the
>staff don't have a formula approach to fine dining they really make it a
>personal experience. Thumbs up in all respects.

and as a foh man, the service is unmatched.