They're both pretty close in terms of service which is probably why you saw them priced similarly as they compete directly against one another. You can sign up for Alamo Insiders or Budget FastBreak to get you on your way more quickly. Lines at airports can be long these days so it's worthwhile.

It's also worth requesting a quote from AutoSlash. After discounts are applied, you may find that one is a much better deal than another.

Safe travels!