I use both a lot when I travel for work. The only bad experience I had was at Dulles airport, I ordered an Uber XL and some dude with a Nissan Leaf showed up. I refuse to get in and he wanted me to cancel it but that would have charged me for the trip for canceling so late so I wouldn’t do it. He drove off I got another Uber and the next day I saw the charge for the first guy. I sent Uber Customer Service an email and was credited back within 24 hours.