Your best bet since you are on a budget is Bariloche. It is not super cheap, but because it is a city, you can find more options for housing. The nightlife is epic as are the ladies. Work is hard to get, but not imposible. Food as a whole is pretty cheap and good. There is a resort, Catedral just 20 mins from town with tons of terrain. When you want to mix it up, you can drive 1 hour to Cerro Bayo, or 3 hours to Chapelco.
You will hear a lot about Las Lenas (arg), Portillo (chile), and valle nevado (chile, but doing it on the cheap is really tough. Good luck, hope to see ya down there.