I reread
Jimmy's chapters on Argentina and Chile yesterday. Like skiandgolfnut, he waxes ecstatic about Hotel Portillo. Hotel Portillo is a relic of a bygone era where ski areas served mostly all inclusive onsite guests. The best analogy in my experience would be the late St. Bernard Lodge at Taos. The Alta lodges have similar ambience but unlike Portillo, Alta is a very competitive ski area. With Liz I wasn't making the trip at all unless we could get into Hotel Portillo. She had a very challenging time driving and skiing solo to Portillo and Valle Nevado in July 2010 after the Easter Island eclipse. That was when I was visiting the NZ club fields.
Jimmy also touted those farther south volcano areas in Chile but I think he got lucky. I have concluded that with shrinking and decrepit facilities plus the weather vulnerability, those are very speculative destinations on a fixed schedule. And to get the most out of them you need to go ski touring above the lifts, a pastime which I have mostly aged beyond now. By contrast Jimmy's view of Las Lenas was cursory, only a couple of days. I saw just enough on my first trip to return a decade later and ski some technical terrain that I should not be skiing now. I'll editorialize that @snowbirdsurfer should absolutely make the effort for Las Lenas with its rare current snowpack. I'd say the same for ChrisC except that he already scored big there two years ago.
ChrisC is correct about Portillo terrain. It is skewed advanced/expert. IMHO closest analogies in scale and terrain weighting are Alyeska and Taos, though topography (high tree line) is completely different at Taos. Adam disputed my Alyeska analogy, but he saw Alyeska in prime form with Christmas/New Year's chutes open and lots of powder, but then Portillo with the Roca Jack traverse burned off (Cara-Cara wasn't there yet), both of those trips in 2007. Since then I see those chutes at Alyeska not open all that often in my bimonthly reviews in-season.
Valle Nevado is the opposite, extremely intermediate weighted. La Parva has better balance, but when I was there most of the off-piste was wind stripped or had unpleasant surfaces. I was not sure whether Kylie was coming on the trip when I made my preferential comments abotu Portillo skiing.
Sbooker's last day in Chile is our first ski day in Portillo, so we could meet up for that as well as some of the time in Three Valleys. I expect not to drive to Valle Nevado because El Colorado has a $19 senior lift ticket, so we could easily ski from our hotel, then use our Ikons when we cross into Valle Nevado.