Love Dr. Thondup as well! He's great with kids, but yes, a little expensive so we'll save him for the real special problems. Plus we moved further away to Tung Chung so will go to a family doctor instead for the everyday stuff. The great thing about Thondup is that he provides free well baby clinic days with Yvonne Heavyside on Mondays and she's really great too for weigh-ins, measuring and any questions. Sorry, don't know anything about the doctors you mentioned. Sounds like Dr. Simon is better than Dr. David though from above posts.