Wine tour companies in France

Had to find out for a client this week the best tour companies in France.
My local contact in Paris recommends the following:

• www.wine-tours-france.com - French wine explorer - they do the whole of France
  
  
• www.dmjwineworks.com - tours in Bordeaux only led by a very respected personality: Dewey Markhan (author of the history of 1855 classification). Is exclusive and expensive but also very good
  
  
• www.bordeauxsaveurs.com - again a Bordeaux based one, set up by the owner of Lynch Bages and connected with some star Michelin restaurant. Must be good

Let us know if you have any experience with these or others !