If you have experienced the German ICE or Japanese shinkansen trains, then the SNCF TGV will be a tremendous disappointment. The trains creak, rattle, bump and are noisy; when the tracks bank to make a large turn, so does the train so be sure to hold onto anything on your table!! When the train is going at speed it is, still, exhilirating though. Too bad the French just don't know how to make trains. .
Trains de grand vitesse? Quelquefois. . .