Gahhhhhhh, horibble places!!!! Both places have incredible skiing no doubt, but both full of cunts!
If you're gonna work a season somewhere in the Alps, I'd really recommend somewhere that isn't the sloany rahrah chelsea on the piste horribleness of the big name tarentaise stations!
Seriously, by going off the beaten track, you'll get more of a social life with the local folk, better off piste sking that isn't tracked out 2 minutes after a dump, cheaper beers, better food, and fewer range rovers.
for park - les 7 laux, (2 alpes is a big resort, with a sick park, but admittedly quite touristy. less than espace killy and 3 vallees, but still quite full of brits. BUT La Grave is just nextdoor, so you also have the gnarliest big mountain stuff on your doorstep.)
For freeriding, maybe Montgenevre, or Serre Chevalier. Or St Foy if you must do Tarentaise!
Or Portes du Soleil? admittedly alot of seasonaires, but maybe less attitude? but the area is alot lower, so the neige isn't as guaranteed. but hey, last season was utter shite, so maybe the next one will be a good one.
{{{{{{{{{{{{{ORRRRRR -------- Come out to Japan, because its cheap, deep and rad!!!!!!!!! }}}}}}}}}}}}}}}}}}}}