Has anyone used CarWiz to book and rent their car? What was your experience with them? Also I just checked them and can get a compact {I have a free upgrade coupon} for 8 days for $92.00 {no taxes but still a very good rate}. I only need the car for 6 days. I know that to qualify for a weekly rate you have to have the car at least 5 days....anyone know about the 8 day rental if you return it early. The weekly rate is $116. Thank you for any imput!