Thanks, gentlebeings, for the input/feedback. I see the lack of product thread from a (potentia) buyer's point of view. That a certain ball is not sold in a pro shop does not say anything about its performance. And I hear a typical ignornace between the lines that "beginner balls" are not worth to be put into a "professional" bag and therefore can be ignored. IMHO a misconception, also driven by the fact that "better" balls might have a bigger sale margin and are therefore more actively marketed.
If there is no official review, noone will post one, and noone else will find this information - it's poor service and, in the end, misinformation.