While I like autoslash and have used it for many searches and a bunch of rentals, I'm using it less and less since I keep finding vroomvroomvroom beating it at finding rates -- especially for rentals outside the US.

And domestically, I usually find one of my affiliation discounts (USAA, AOPA, AAA, etc, etc) beats what autoslash finds.

Now if autoslash could remember all the affiliation discounts I can use and automate searching (for example) all 4 companies that have USAA discounts, I'd be all over it.