I'm pretty loyal to Avis, usually willing to pay a little extra as I've found them to be good if I get a dodgy billing from a location abroad. But in Lisbon, for June 12-14, I can get less than 78euros/day.

Europcar is a little more than half that. Does anyone have good codes for Lisbon? The ones mentioned in this thread for Lisbon don't do anything.

THanks in advance!