Buckle up child
The straps that hold tend to twist. Every now and then you have to unscrew the buckle in the semi-twisted straps. The "fixed-pull" of the belts is from time to time very stiff, as if the belts would verhäddern somewhere. - A point deduction
Adjust belt height
Adjusting the belt height is a disaster. For that I give two points deduction. Took me a whole hour for it. That is the purest Fummelarbeit. It is dangerous to damage the protective styrofoam. One can thus forgotten times quickly to take another child with that another belt height required.
Appearance
I find very good.
Conclusion
I bought it as a spare seat and am not happy with it. As Erstsitz we have the Römer Duo Plus. The cost twice, for the belt height is very easy to adjust. Overall, the Roman works better padded and more secure. The missing Isofix would have been ok, but I've saved the 100 euros in the wrong place and prefer to take the Romans. The poor quality of annoys me every time. For people who drive every few weeks by car, it is safe enough.
Update September 2012
The straps fray now been made at one point. Must therefore still deduct a point. The Romans, which is used virtually every day, still looks like new!