Business Lunch in the Glen

I'm looking for a good mid-class restaurant for a business lunch with a client near the Glen and/or Northbrook. This particular client has dined with us at Mitchell's Fish Market in the past, but I'd prefer not to repeat the same restaurant. Mitchell's would be a good frame of reference for the "scale" of restaurant I would be looking for. Thanks in advance.

P.S. I was considering GNR winner Prairie Grass Cafe - thoughts?

Prairie Grass Cafe would be an excellent choice. Another good option, in The Glen (but not the downtown part) is The Grill at The Glen Club.