In another recession has been written here, that one of the cases had a defective lock or loose the same for delivery. Now that's annoying, but certainly not typical. In such a case one can equal revoked or complain when buying new ones.
Incidentally, I have bought the set with only 2 suitcases in the color red for a girlfriend. The red I like very much. But it is probably more appropriate for women or couples.
A few facts about the case:
The set of Wagner Luggage (Wagner was called until 2011 Titan) is made of pure polycarbonate, the lightest and sturdiest luggage material that is currently used on the market. Size L weighs 3.7 kg, Size M 2.90 kg and the cabin trolley S only 2.1 kg.
Even the small suitcase in S, because you can take with in the aircraft cabin, has four smooth-running and lightweight wheels. Other manufacturers obstruct here for weight reasons only 2 rollers and are still no easier than this.