advantageous:
- The keys are functioning properly so far
- Optical mechanism works without a mouse pad, with me on dark brown veneer
- Fits comfortably in your hand (have glove size 7.5)
- Side buttons disturb hardly, I'm not accidentally turn
- Wheel has feedback in steps and also acts as a button in play precisely (in Sims, where the camera I could not swing with the Microsoft mouse because the wheel has responded sporadically)
- Cable long enough and very flexible, almost like rubber coating
- Plug and play (change key assignments and dpi-change I have not tried)
not so good:
- Key click bright and relatively loud
- Sensory feedback only when wheel well, with the buttons adjusts to the feeling of fragile plastic
- Could be a bit more difficult
- Waste packaging (blister with several squaremeters box around it)
If after a long-term test to change something, I'm going to write it here.
Conclusion: value for money ok. Buy recommendation for PC-workers and players with normal requirements