I know that the Pullman has a shuttle service from any terminal to the hotel, I suspect that the Hilton does as well. The shuttle is not necessarily any faster than the CDGVAL but it does offer a complete baggage transfer service.
The CDG Ibis has no such service to my knowledge. The hotel is at Roissypol, a stop along the CDGVAL line, but guests are required to handle their own luggage.