Great info, thanks
Location is the biggest dilemma of all. If we lived within 20 minutes of Laussane we'd be closer to an ex-pat community and Geneva airport than we would in Valais, but we'd be further away from the spectacular scenery we love.
I should add we are not huge sociliasers, but it would certainly help to know a few English speaking people soon after we arrive. We also live out in the sticks now, so are not bothered about having few neighbours.
It maybe that we rent somewhere closish to Lausanne initially and maybe look to buy somewhere further afield as we settle in.