Its a wonderful, quieter place to ski.
Chamonix or Verbier or Megeve are crowded and you spend most time doing lines than actually skiing.
Prices are half or even third of the most famous ones.
Hiking is superb.
As cons, there is not much nightlife in the Haberes. You can have a lot of fun by yourself in small groups, of course, but don t expect discos full of every nationality on earth