Hi,
Was there awhile ago: 2008.
If you want a sample of a gear list, etc, I'd be happy to e-mail it to you.
Stayed in a nice hotel in Mendoza:
http://www.elportalsuites.com.ar" onclick="window.open(this.href);return false;
I did the Vacas Valley to Plaza Argentina to Summit to Plaza de Mula exiting Horcones way.
Our route was the false Polish Traverse.
Used full on guide services Grajales. It was a good way to go for a first time expedition.
Learned a lot.
I loved every step of it, well almost every step.
I loved the landscape, the climb, the people, Mendoza, the wine, the route, the asadas on the trail, the mules and the MOUNTAIN.
I could live there for a bit easy.
It is big, and making it to the top is awesome.
Recommend a wine tour: Cantena Zapata:
http://www.catenawines.com" onclick="window.open(this.href);return false;
Reading through this thread, you have a lot of good perspectives and ideas.
Good luck and safe journey.
Uwe