Which Car Rental?

[VW31]

Which rental agency is better in terms of service, cars, etc
Alamo or Budget?

For 5 days, I am getting the rates below:

Alamo = $139.97
Budget = $126.71

The $13 difference is not much to me if it means I will be getting better service and cars to choose from.

Is there another option besides the Collison Damage Waiver (CDW) if I don't have my own insurance? My credit card only covers if I have my own insurance as well.

Thanks