I really like Silvercar. They have an all-Audi fleet and their all-inclusive model comes with free GPS, wifi, and satellite radio. You pay only actual tolls (no administrative charges) and can pay a flat $5 and they’ll refuel your car at market rate.
It doesn’t work for them everywhere, however. They used to have a Houston Hobby location but that’s closed. Now they’re closing down Dallas-Fort Worth.
Their website and app will not reserve cars past July 1 at DFW, and customer service confirms it’s because they are shutting down the location.