My wife and I have used Auto Europe a number of times and have had uniformly good experience with them. They are a broker, so you'll end up actually getting a car from somebody you know, like Avis (which we did on our last trip to Spain). I usually call Auto Europe first and ask for a quote, then tell them that I need to shop around to make sure that the rate is a good one. Their agents normally tell me that if I get a better rate, call back and they'll beat it--and this has always turned out to be true. You can visit them online at http://www.autoeurope.com/

Hope this is of some use, JKJ