I waited to have this keyboard well in hand, well under the hands to give my opinion. I make computers from the beginning. I think this is the best keyboard I have ever possess. He marries so perfectly the shape of the fingers, palm and wrist, we have no fatigue while typing. All of the hand rests. This is undoubtedly a great progress for all / all those / those many texts to hit and suffering from various ailments due to poor positions that cause cysts and joint or neurological problems in hand. For cons, the first week, we are somewhat taken aback by the shape and placement of buttons. The keyboard is very high on the front, and we want instinctively to remove the hold that enhances. But when it is taken under control as soon as one accepts the position that is imposed on us, what a treat and what a rest. ATTENTION, inadvisable for people who do not strike with all their fingers.