Finest restaurant in Milwaukee?

I posted a blog about 2 months ago asking for your advice in a day trip for next month, when I have a conference in Milwaukee. We decided to go to Chicago for the day trip, and then at some point during the week checking out the Miller Brewery tour in Milwaukee.

The next challenge is this: one of our very loyal clients is the chair of the conference committee so she will be in town when we are there. On the Saturday night when we all fly in, we are going to take her and her coworkers out to dinner as a "thank you" for her business and her loyalty. I've researched a few different restaurants online but I am sure I'm missing at least one. I'm not exactly a high cuisine kind of guy so my efforts online could potentially have been a bit misguided.

This is where I need you, the current or former Milwaukeeans of 2old2play, to give me a recommendation. The conference is at the Midwest Airlines Center and all our hotels are in the same vicinity. Where are the finest restaurants in that part of town? We don't want to hold back (and the company is paying for it, not me ) and this client really is very valued to us, so a $200-per-bottle-wine type of place is what we're looking for.

If anybody has any suggestions, let's hear 'em!