And I categorically wouldn't vote for Megeve.
I went out there in July this year in my own aircraft, a Super Cub, having arranged it with them beforehand and when I got there they basically said they didn't have time to fly with me. They couldn't have been less interested. They seemed to think that, having flown all the way from the UK, I would be happy to sit around the airport on the promise that, maybe, the day after tomorrow, they would be able to do an hour with me. This is what they said!
Part of the problem may have been that I was in my own aircraft so they weren't making as much money (although they charged me 70 Euros an hour for the instructor for the hour or so I was able to do).
I think their priority, or at least that of Jacques Brun, the chief instructor, is to fly tourists around Mont Blanc, not to instruct mountain pilots.
Others -- Ian, Aerobatic Flyer and Flying Dutch -- have had very good experiences there. I had a terrible experience and I thought their attitude to me was remarkable in its lack of shame. It seemed to go completely over their heads that I had basically made a wasted trip, wasted large amounts of money and my week's European flying for the year.
If you decide to go to Megeve, I advise you to get set down in writing what they will offer you.
QDM