Side positives:
- The ability to charge by plugging into a USB port or AC power while continuing to use it;
- The package that can store the charger and cables;
- The dongle unifying small enough to be left in place on a laptop.
Side negatives:
- The wheel, once "intelligent", which could be programmed to switch from open notched (or vice versa) automatically according to The application used is now only a "beast" adjustable (de) mechanical lock, pressing a button, himself once programmable;
- The wheel, always, that lack of precision free run mode, continuing to slowly scroll through the pages even after stopping to turn;
- The disappearance of the side knob that, if she could surprise at first on the MX Revolution, finally proved very convenient to use. Instead, a button to access so unlikely that I will certainly never use;
- The access of side buttons that lose in ergonomics, forcing the thumb to an unnatural gymnastics;
- Lack of customization possible buttons via the driver. For example, I personally find it logical that the right button is, by default, associated with the "previous page" and the left to the "next page", but it is impossible to reverse these functions. We are condemned to having to follow the logic of Logitech;
- Teflon pads, which give the impression to hang gliding and whose borders on absolute zero. At present, I still do not understand why other skate technologies have not been developed, like the ceramic pads of the Nova Slider ...
So overall, although the Logitech Performance Mouse MX remains a very good mouse for office use, with a very good grip inherited from the MX Revolution which it takes the shape and dimensions, and a Darkfield laser pointer keeps its promises, I stay on my hunger, with a feeling of "low-cost" turning back compared to the functionality of buttons and ergonomics. To choose, I wonder if it is not better to take a Marathon Mouse, finally to similar functions, but twice cheaper!
