Today I needed to provide a recommendation on a Wireless Keyboard and Mouse combination. Years ago I was in love with the Focus brand of keyboards, their model 2001 was a great fairly priced keyboard. Well that is if you liked the IBM Selectric style keyboard, long travel with clicks.
I have transitioned to the softer keyboards, but like a keyboard that makes contact before the key gets the whole way down. The Logitech Wireless Mk520 is my current recommendation for a basic wireless keyboard.
For a higher end keyboard, I personally use the Logitech MK710 Wireless Desktop Mouse and Keyboard. It includes a nice LCD display for Number and Caps lock, which I miss on most keyboards. The function keys are programmable, and it even includes a calculator button with brings the Windows Calculator up, ready for use. The Focus 5001 Keyboard used to have a built in calculator, it was fantastic.
One of the fine features of both of these keyboards is the Logitech Unifying receiver. This thing is great, plug it in and it works. Move it from computer to computer and it works. Change the batteries, and it works. There is no need to press the connect button and wonder, the Logitech Unifying receiver just works, it's awesome!
On my desk is a MK710, and an MK520. Even though it's bigger, the MK710 usually goes on the road with me. The MK710 comes with a much nicer mouse, it has back buttons, and you can turn off the scroll clicker, which is great for rapidly scrolling through long documents. It's much more like flipping through a book than a standard scroll. The wheel continues to move when it's scrolled fast, then with a tap, the document halt right where needed, it's nice.