Portes du Soleil.
The Portes du Soleil is famous for being one of the largest ski areas in the world. It is located on both sides of the Alps and is made up of twelve resorts in total.
Portes du Soleil and 4 Vallées.
Is of course a matter of personal taste but I´d say Portes du Soleil.
This is of course a matter of taste but personally I'd go for Portes du Soleil, preferentially staying in Avoriaz.
I'd recommend Portes du Soleil, Alpe d'Huez and Les 3 Vallées.
In Portes du Soleil between Avoriaz and Les Crosets. It's the piste going under the Chavanette lift.
Les 3 Vallées, Paradiski, 4 Vallées, Dolomiti Superski and Portes du Soleil.
Les 3 Vallées, Portes du Soleil, 4 Vallées, Dolomiti superski, Alpe d'Huez.
Of course a matter of taste but I'd say 4 Vallées.
Les ArcsLa PlagneChamonixThe Three Valleys(Biggest linked ski resort in the world)Val d'isereMegeveLa Grave(All off Piste)Portes Du Soleil(Biggest ski resort in the world)Flaine
All the large resorts are in the Alps so I would go for one of these for example Les 3 Vallées, Portes du Soleil and 4 Vallées.