TGV vs Taxi from CDG to Paris Hotel in 5th Arr.

There is no TGV service between CDG and Paris. You would take the RER B into the city and then transfer to another RER line and/or the metro to get to the station closest to your hotel. The fare is €9.25. The Paris by Train site has detailed instructions, including photos, on how to do this. For a zoomable map of the metro and RER system, go here: http://tinyurl.com/6xmvms4. The meter will be running if you take a taxi so your fare will be dependent upon traffic conditions, but you should expect to pay €50-60.

The TGV is France's high-speed city-to-city rail system. The RER is Paris's suburban rail system, which is integrated with and connects at many points with the Metro, which is the underground rail system within the city itself.

Nancy,, four suitcases,, and 4 carryons,, then also four purses? Take a taxi, it will run between 45-55 euros usaully, and taking the RER will run you about 37 euros,, but then you will likely have to transfer to a metro line to get to your hotel unless it is within walking distance of a RER,, ( where is your hotel?) The metro will not cost you extra however, you can use the same RER ticket as long as you simply transfer , and not exit the station, but some metro stations have long long corridors, and stairs, are you all comfortable lifting and carrying your bags up stairs? Some stations do have escalators, so we really need to know where your final destination is.. and how much luggage you really have. Plus keep in mind how tired you will be after a 12 hour flight. A taxi will cost 10-20 euros more, but thats less then an extra 5 euros each to get delivered to your hotel door.
If you take a taxi write down the hotels complete name and full address( including postal code). Give it to driver, misprounouciation can get you somewhere other then you want to go, and some hotels have similar if not same names even!