edit: Wow, sorry I don't see the date, anyway I will left my comments to someone who is interesting in :-S
Hey, I'm new to the forum, I can give u guys a few data since I'm Argentinian
Las Leñas : It's beautiful , I think it's the most expensive one, famous argentinian people used to sky there...
best argentinian snow since is located in the higher mountains(between 2000 & 3000 meters a.s.) and dry wheater helps too. Have large roads and no threes. I do not freeride but people say is very good there. is a small village so no much things to do out of riding. If it's windy they closed the top lift that has the most funny part :-S. Hotels and restaurants are pretty expensive but you can practically go off riding from the Hotel.
Cerro Catedral: My favorite, Is the bigger center of S.A. lot of roads and lifts but make sure that is a good season otherwise lot of the roads from the middle to the bottom will close which are the best ones since you can ride on a small roads between the woods.
All the sight views are just breath-taking. Cerro Catedral is about an 40 minutes from San Carlos de Bariloche by the local bus. Bariloche is a beautiful city with a lot of night-life, it's very touristic. There are a lot of cheap Hostels, restorants, pubs, shops, etc.
Other big resort is Chapelco in San Martin de los Andes but I've never been there for riding... :dunno: is about 3 bus-hours from Bariloche.
Other resorts are smaller but small not mean bad
In fact this August I'm going to
Cerro Castor which is 20 km from Ushuaia the southern most city in the world!
Never ride in Chile and I think I will never go since I hate chiliean people :cheeky4: , But I can tell you that if you don't pay a package and plan your trip by yourself you'll find Argentina cheaper since you'll get 4 pesos for a buck, in fact lot of chilieans go argie for skying since is cheaper for them too.
If you gonna come make sure you book for August or July, Hope this helps and sorry for my English,I should keep Practising