Now the promised update: I now had the large and medium-sized suitcases in use. The stench was tougher than expected, he actually only disappears, but not quite, after repeated use (not for storage in the closet etc.). The rolls are awesome. The number of scratches still remains limited (commuters with car). Watching you need but at the zippers inside, a lot of tension can not bear. Do you have to carry your bags sometimes (with stairs), the side (= unbalanced) positioned carrying handle is rather unfavorable, as it pushes the suitcase in the legs. Keep therefore the overall assessment at the 3 stars.
Update after 2 years of use:
Most often I have the middle and the big suitcase used, the former regularly on weekend trips in the car, the latter on leisure travel in the plane. Both now tearing the inner cover. The rollers show strong signs of wear, the big suitcase a role is very disjointed. Scrapes have both anyway. Because of the "disintegration" therefore now the devaluation on only 2 stars. Must me probably look for a new suitcase.