Places to eat in KL

My first post, but not a very interesting one. I am planning dinner for quite a big group of people (10-15) and can't decide where to go. Anyone has any suggestion?

Place must be:

• Posh cos some gweilos coming also
  
• Expensive (but not overly so lah)
• Characteristic (not keen on hotels, but can also lah if nothing else)
• Good food and hearty meals
  

Someone suggested Telawi Street Bistro, which is a pretty good one really since it's not a very hotel-y place. I wonder if there are other places like that around KL/PJ?