Very shortly before the holiday we bought two cases of this kind, one in a blue gray. Initially surprised me that the shells were not thick. However, a greater material strength means more weight. Filled full they were with about 18kg luggage. The first use with 5 flights, several ferry crossings and bus transport have survived. More I can not say today for durability. Have particularly enjoyed the two relatively large wheels. A "walk" from one bus station to approximately 1km from the ferry terminal by the city on sidewalks, streets was not a problem partly unpaved. This demonstrated the advantage over 4rädrigen versions with the then still small wheels. Also, the lockable handle in multiple positions proved to be very beneficial. Inside were the case my standards adequately equipped. A detachable compartment inside at the top separated by a grid if required a part from. The triple lock possibility should not go unmentioned. on all sides of the case was closed.
Update 15-05-2014: two holiday trips later, the now two such cases are still intact, minor scratches, but 100% functional. Highly Recommended