Our driver, Marcus, was waiting for us when we arrived at the terminal. He offered to help with the bags (not all drivers do) and was extremely pleasant throughout the ride. We had a great conversation with him all the way to Paris.
I highly recommend Sixt for transportation from CDG to Paris and back. It takes the worry out of how you are going to get to your destination.
When we were in France, the trains were on strike, the buses were running on reduced schedules and extremely crowded. Cabs were always filled because of the public transportation being on strike. I was extremely pleased I had booked my ride from the airport to the city with Sixt!