I got a rental car from Enterprise when my car was in the shop. I was highly impressed with their friendly service and how speedily my rental was handled. They did not overwhelm me with paperwork -- I showed my license and handed over my credit card, and within 5 minutes they handed me the keys and I was on my way. The car I rented had plenty of gas in it, and it was clean both inside and out. Even though this Enterprise location was very busy when I visited it, I was treated with efficiency and courtesy. If you need to rent a car in Denver, this is a good choice.