Very good 9 3

I suffer from tendonitis of the wrist for two years; accordingly, adopting a good working posture is essential if I do not want hand stewed after working day. For this, this keyboard is really good: I particularly recommend the use of the "base" that can tilt backwards. Posture is unusual but much more "natural" view of the forearms and wrists.

Just because it allows me to work without pain, this keyboard is essential to me.

Otherwise, the build quality is very good for this price. The set is solid is well done. I appreciate especially the texture of the palm rest. The "special" functions (zoom, programmable buttons, etc.) are to me a fairly low interest, but they exist if we want to use it. Note that the sound control buttons (mute, volume ...) and launch the calculator are recognized without additional driver under Linux (Ubuntu anyway).

In terms of disappointments:
- The keys are a bit too hard. I feel like typing it records for a dull, at first I did a lot of typos because of this (I am a regular portable keyboard, very sensitive). Generally, it tires the fingers and hands to hit as hard.
- The buttons are too loud; especially the space bar, which is a "CLONG" very unsightly. After a few days of using it softens but remains very sensitive ... My colleagues complained about the noise it makes! In fact I think this is due to the fact that the envelope touches the "hump" in the middle of the keyboard. This mechanical strength with a lot of game I wonder if two spaces bars (one on each side of the "bump" ) would not have been better. This was done at a time, but it is true that it is a bit destabilizing.
- The B button is on the "wrong" side of the keyboard. I always tend to look with my right index finger, but is left ...
- The right of the keyboard is much, much too large. This is due to the fact that there is a full numeric keypad (a criticism often addressed to older models of the Natural line was that their block of function keys - inser, delete, end, etc. - was oddly arranged in two columns instead of three: it was to limit the size of the right of the keyboard). If you put the mouse right of the keyboard, it means the right arm made the big difference every time you want to catch: this is very bad. As I right hand in poor condition, I have the mouse left, so it does not bother me, but this is not necessarily the case for everyone.

These slight defects aside, I repeat, this keyboard is essential to me.