Hi Woodward!
Well I'm argentine and I've been several times in Chile. My overall impression about chileans is that they are more serious and organized than us. And I believe they are also very patriotic.
During my vacations I visited several cities of the south of Chile: Pucón, Villarrica, Valdivia, Osorno, Castro, Puerto Montt, Coyhaique and Punta Arenas. I must say I was strongly impressed by the historical background of Valdivia, and I enjoyed a lot the day I spent in Isla Corral. There was a recreation going on there, I don't know exactly what it represented but there was people dressed as Spanish soldiers (I hope I'm not wrong) and they even fired the cannons of the fort. While I was in Valdivia I heard a lot about the earthquake. It's unbelievable a place could change so much after an earthquake. I'm speechless about that.
I think Pucón is a very interesting and modern town (or city, I'm not sure). I did rafting in the Trancura River. It was great. I had 12 years old but I remember it very well. I even have a picture of it.
I just remembered I also visited Frutillar. I believe the lake is enormous, maybe one of the biggest lakes in the world. I had the strange feeling I was in Mar del Plata, my city, which is in the Atlantic coast!
Most people treated us very well and kindly. I remember that we had run out of chilean cash and needed urgently to change some argentine money. Since we forgot to change our watches when we arrived to Chile, we arrived to the bank one hour late, but the manager opened the back door of the bank to us and changed our money. Most people don't believe me today when I tell that.

I must say I'm often saddened when I hear fellow argentines saying stupidities about Chile. I'm aware something similar happens on Chile. I know Argentina and Chile are not best friends, probably because of several things that happened in the past, but I must say I would really like the relation between both countries to improve. The only place where we felt we were not welcomed was in Punta Arenas, where most people seemed to dislike us, probably because we couldn't disguise our accent and they realized where we were from. I think I understand why they felt that way, but our past problems weren't my fault (and probably it weren't their fault neither). I think its vital for both of us to preserve our democracies.
I can't say I don't feel pain when I think about our past diplomatical conflict... it's something similar to what I feel when I remember the Malvinas war, however I think we should make an effort to get over that pain and start caring for each other.