They are all over the place, depending on producer and Terroir. The Mendoza Pinots are mostly power-based, mostly non-Pinot like for my taste, there are some very good ones but you have to search.

Patagonia has probably the best Pinot in the country, but the good stuff is expensive... its made by an Italian Noble Family that has interests in various wine operations. The top stuff is single vineyard, with very very small production and a price to match.