If you're looking for a gravity fuelled trip with the convenience of uplifts then you can't go wrong with the Portes Du Soleil Region, which covers Les Arcs, Morzine and Chatel. The lift pass covers the whole region and you can tour around between the three areas easily enough. Morzine can be busy but has the world cup run which i found do-able and i'm no downhiller, Les Arcs has some fantastic runs and a more laid back vibe than Morzine, Chatel has more great runs plus the freestyle park but is a little spread out if you don't have a car. Everything is graded in the same way that ski runs are so you know what you're setting out on. There are some xc routes marked on the route maps but i didn't do any, the fast flowing downhill runs were too much fun!