Replaces luxury mouse

I confess to having had enough to buy Razer and other Ikari, from falling down after a handful of years, see no more than a year ... and of course suffer the mocking looks and contemptuously strand "those who know and never have any problem with branding tools rated 600% and 15 out of 5 stars on their favorite site.
And that for mice that are not removable and therefore more serviceable ("fault" is usually mechanical, even on lasers)

So I bought this.

To:
- 7 euros and few;
- Small (10 x 7 x 3cm) and therefore does not require the hand to adapt.
- Very relaxing (as for the flat keyboard compared to "normal" pain relief).
- Precise enough to make photo editing pixel.

Against:
- Its small size makes me ask the back of the hand on the desk. It does not because the gene back of the hand merely serves me me pivot to browse two wide screens, finger movement adequate to the task. Yes, even by making photo editing. By cons, if you are used to move the mouse to move the cursor, it may become exasperating for you ...
- Only three buttons (including the dial, clickable).
- A medium length cable: may be too short for large offices (already limited for me).