In principle, a great mouse, which unfortunately has presented a lot of potential

Benefits:
+++ Thumb buttons: the unusual placement of the thumb buttons is the biggest plus of this mouse, because this arrangement is very ergonomic, the click is also extremely precise
++ Left- / right-click very precise with just the right pressure point.
++ Mouse is very ergonomically in a medium to large right hand.
++ Although the look "cheap" acts, the materials used to feel very good (except for the mouse wheel below)
+ The laser operates smoothly and accurately
+ 11 buttons (but see below the negative)
+ Mouse can store Macros

Neutral:
o cheap-looking appearance, but this is much better than it looks
o The mouse feet glide smoothly across a relatively diverse Mouse, but are not suitable for a wooden desk without a mouse pad.
o mouse can be poorly raised, however, with strong support of the little finger possible.

Negatives:
- The Achilles heel of this mouse is not available, the 4-way scroll wheel. Left click, right click and click directly proceed with precision and exactly defined pressure points in just the right thickness. The screening is accurate, but a little too stiff. But unfortunately nothing helps, because the wheel is made of metal, on the human skin easily slips off. Taking a rubber glove on (a latex glove should go), so you can control the mouse wheel and ergonomically sensible, but not with a normal naked middle finger.
- The mouse is located in the top price segment, but has only 7 freely configurable keys.
- Macros pointless, as there is too little freely configurable keys to which you could put the macros.
- No storable profiles
- Lack of quality in the final (one of the mice tested had rickety thumb buttons)

For durability of course I can make no statements and will also make no because the mouse is returned.
Legend: +++: best on the market ++: excellent +: good o: standard or with weaknesses -: bad -: very bad ---: KO criterion or total failure)

Conclusion:
Unfortunately, the scroll wheel made of metal, on which the middle finger will not stop without rubber glove, and just 7 programmable keys for a mouse in the top price segment lead to a significant devaluation.
3 stars.