I've owned the Mephisto II and IIX. Loved them both. Never had a problem. Have no experience with the Ayre.
Having said that, I think the Audiomeca is a poor investment especially in the U.S. If you have a problem with it, where are you going to get it fixed? How much would it cost to send it to France and back? Is Audiomeca still in business? If so, how long will he be around? What will your resale be? These are questions you should consider.
P.S. Even my wife loved the way it looked.