They are one of the car rental companies that hit your credit card for an additional $300 "deposit" and they'll float it for up to 2 weeks before it is returned to your account. I rent 15-25 cars a year and I would never rent from them, but the cash floating isn't the only reason. Check this link for a few more opinions.

http://www.lasvegasadvisor.com/forum/messageview.cfm?catid=17&threadid=314850