I have used HertzSXM for my most recent trips because they include liability in their quote; it's not an add-on. However, a friend recently reserved with Leisure at a very low rate so I checked them out just for grins. Turns out for my four weeks this November, they were over $300 less than Hertz, even with adding in the liability. I reserved with Leisure and cancelled Hertz.
Do you happen to know the link to Leisure? I'm checking with all the companies to find out what is what with these companies. Thanks.