Pros: Big, varied terrain, birthplace of ski, food, atmosphere, scenery, transportation
Cons: Sometimes a bit crowded, weather sometimes
This used to be my 'home' mountain when I lived still in Europe: went to ski there once or twice a year for 1-2 weeks for 25 years. Went back last year (living in Canada now since 4 years): it is still a magical place. Contrary to northamerican resorts and some French resorts, this place has a history: plenty of atmosphere. As the terrain is really big and varied, you can pass a day of skiing without ever taking the same lift or slope. Scenery is absolutely impressive (the Alps !) and contrary to east-canada skiing, temperature is always supportable. Another great thing: public transportation always gets you back to your hotel, even if you ended up far from your starting point at 16h00.