I just posted a long trip report on Trip Advisor. For some reason I can't seem to copy the link, but if anyone's interested, it's in the San Carlos de Bariloche subforum of the Argentina forum, and my username there is trekkertoo (someone had already taken trekker---appalling!).

It was a fantastic trip. What a beautiful part of the world! Now we're back in cold Massachusetts, just in time for our first real snowstorm of the winter