1) Not so flat, the keys on my keyboard Microsoft Comfort Curve 2000 are lower. 2) The keys are misplaced, the arrows are so close to the number keys, which are also used for 'Fin', 'Start' and 'Insert' that tends to type 'Insert' instead of the right arrow. 3) You can not select a line of text by Shift-End because it gives 1 July. 4) The keys are a bit bruitants. 5) The angle of the sides of the keys that the surface is not very large, smaller than on my laptop with 15-inch screen, so one tends to miss them. 6) On the one I received, the ^ key was not working.