Snow Situation Haute Route between Arolla - Argentierre

Posted as guest by Wolfski:

We are planning to do the portion of the HR from Arolla to Argentierre. (East to West)

In particular we would like to have some information on the snow situation

a) between Cab. de Valsorey and Bourg - St. - Pierre
b) Also, if the traverse from the Plateau de Couloire to the Cab. de Valsorey poses any particular problems and
c) which is better to take Col des Ecandies or the Fenêtre du Chamois?

Thanks folks.

Wolfksi