In all my years of flying out of PDX, I never rented a car at the airport. I'll be renting a car for a week in November, and wondered if any of my fellow DL FlyerTalkers had any tips regarding good/bad agencies.

It's hard to tell which companies are on site, and which require a shuttle bus to a remote location.

I typically rent with Hertz, but I've had two very bad experiences with them in Europe in the past week, and am hesitant to book with them again until they sort out my current complaints. It's quite a bummer, since they're generally pretty good, and I get a good deal with them, plus the SkyMiles.