I've never heard of Pilão coffee, so I can't say for sure.
1 option is Starbucks House Blend. (Then have it ground.)
Another option is that Establecimiento General de Cafe:
http://www.estcafe.com.ar/ It should be good, because it's roasted here, but really, it still kind of sucks. But some on here like it.
There is also a coffee place on Corrientes (I think... or Corodoba) between Reconquista & San Martin. It's on the NORTH side of the street. (I'll let you look at the sun and figure out which side that is.) I bought some coffee there (it's a cafe & whole bean seller) and the beans looked and smelled great... but they kind of tasted like crap and they didn't grind up that well in my coffee grinder. It's like the beans were exceptionally hard. Disappointing crap.
Instead of Folgers, I brought 3 pounds of coffee back from the States from one of those local coffee houses that are popping up in ever medium to large city across the country. (Typical bio: "He was was a lawyer who hated his job, she was in pharmaceutical sales and hated being on the road all day, so they quite their jobs and started roasting their own coffee...")
Coffee should be consumed soon after roasting and if it's not, it should be sealed and frozen. Well, I bought my coffee 2 1/2 months ago and I haven't frozen it and it still beats the shit out of the crap they sell in this town. Sorry, I'm not sharing, but really I would say that Starbucks House Blend is better than nearly anything else you can get in this city and it's about AR$30/250gr.
Good luck.