We used Uber to and from CDG and within Paris last week....just terrific.. a flat 50 euro to or from CDG from left bank, and cheaper than calling a taxi as they usually arrive with 5 or 6 euro already on the meter because they turn it on when you call. Our only hitch was meeting driver at CDG. The app said Door 2 on Arrivals level...he wasn't there, but another Uber driver turned up on foot to fetch his clients and took us up to the departure level where our driver was. Cars were super clean with water bottles. High end sedans including a couple of mercedes.