In reply to Whitters:
We had the map linked above and used it briefly when we got a bit confused - ridiculously - on the approach to Piedra Negra. Other than that it stayed in the bag.
For Torre Valley approach to Niponino and Polacos the current mapping is actually incorrect as the approach has shifted from the west to the east side of the valley. We didn't need a map for this, just some local directions and a lot, a LOT of willpower - the approach is awful.
If you go into Niponino, my advice would be that if you can, try to follow somebody in first time as it’s quite difficult to find. Even on our third trip in we struggled. Polacos is a little easier (even though you skirt Niponino on the way there) by dint of the enormous boulder sitting there up on the talus which is visible from miles away.
We didn’t do anything from Paso Superior so don’t know what that approach is like.
There’s a good shop in town sat back behind a massive lawn. I never did work out what it was called, but it says ‘souvenirs’ on the front and its steps are chained off when closed. It’s the best (and only really) shop for mountain food (though no freeze dried/foil meals etc) and sells a ton of maps too.