How cheap are you? If you want a really cheap rate, book at Fox Car Rental in Las Vegas. Be prepared to WAIT at least ONE HOUR in line (employees seem to get a perverse pleasure about announcing they are "going on break" or "going to lunch" in the face of a maddening crowd. THEN, after you are done with your paperwork, head outside where more often than not, you have to hunt down an employee to locate your car, course, there are no cars ready to go so you'll have to WAIT again.
Cheap, yes. Customer friendly, NO. And you'll wait. And wait. And wait. And...