Private shuttle service from CDG to Paris (and back)?

We used Suntransfers last summer. Our hotel was in the 15th arrondissement and I think we paid around $50 (yes, dollars--not euros) for the private transfer for two of us from our hotel to the airport. The driver was about 5 minutes late. Not late enough for us to call the company. If he was 10 minutes late we would have. He was courteous and got us there safely. He helped with our bags. The vehicle was clean and didn't smell of smoke. Overall it was a convenient and good experience, but if we would have known how easy it is to use the metro and take the RER B out to CDG, we would have saved a lot of money and would have done that instead. If you are not able to use the metro/RER line then a shuttle makes sense.

hey red
don't forget to come back and tell us what a fabulous time you guys had
aloha

When you have your luggage, just go to the official taxi queue and take a taxi into Paris. Cost is fixed at 50€/55€ and taxis are always there waiting for you. You´ll reach your destination quicker in a taxi as only they have access to the HOV lane along A1 into Paris and the special bus lanes when traveling within the city.

Private transfers are less reliable than G7 Taxi service in Paris and if they fail to pick you up and you have prepaid, good luck getting your money back. Go to the taxi queue at the airport; call the day ahead on the English line to book a ride back to the airport. The train is cheaper if you are confident in carrying baggage up and down stairs in the metro and if you know how to be completely pickpocket proof while hauling all your stuff.

You might try this website to book:
www.g7.fr/en/
It matters where you are staying - 55 EU or 50 EU.

It matters where you are staying - 55 EU or 50 EU.

Fixed taxi fares from the airports do not apply to prearranged taxis. If you call to have a taxi meet you, there will be an arrival fee added to the metered fare into Paris.

I'm not sure what shuttle service(s) we used, but they picked up other passengers en route to the airport, which made the trip considerably longer than just from our hotel to CDG. Once it was just a pre-dawn tour of Paris, which I liked. (I like seeing cities wake up.) The other time the trip just seemed long and made me start worrying about getting to the airport on time. The seats were fairly hard both times.
We've also taken cabs and find them preferable. No touring around to pick up other passengers, so the trip is shorter and the seats more comfortable. It's also possible to talk to the driver, which wasn't feasible in the shuttle van. Cab drivers we've encountered have all been professional, courteous, some even friendly. Prices are set for cabs (50€ to / from CDG for right bank, 55€ for left bank).
I'm not sure what the advantage would be for taking "private transfer" over a cab.