Have the MS Wireless Comfort Keyboard 5000 procured as a replacement for MS Natural Ergonomic Desktop 7000. Unfortunately, my old MS keyboard went after a period of use 6-7 months from the labeling of the keys, so that the old keyboard was to use hardly. Unfortunately, it was Microsoft not possible here to provide permanent remedy. The current keyboard MS Wireless Comfort Keyboard 5000, although by far not as ergonomic as the Natural Ergonomic keyboards, but at least relatively quiet and suitable for people who had problems with the strongly curved ergonomic keyboards. For me, some buttons are too small and very used to, eg. As the Esc and function keys above the QWERTY keypad and especially the Left Shift key. It is positive that keyboard shortcuts are marked on the keys forward facing edges, vertical, z. B. Ctrl-C for Copy u. Ä. Over the life of the key label that was always a problem in Microsoft keyboards in the past, I can not say anything until after a 2-month use. Overall, a solid-looking, usable keyboard. Mouse with this - In the Set a wireless was. This is very good in the hand, is not too heavy and has fortunately 4 keys, in addition to the usual left and right mouse buttons and the scroll wheel are the left and right still individually programmable keys. For me very important. Highly recommended mouse (Microsoft Wireless Mouse 5000). Helmut