I'm lucky enough to still own and use what I've always held as the perfect keyboard---the OmniKey Ultra. Bought it new. It has never needed repair although it could stand a good cleaning---every now and then I clean the worst off with a paintbrush full of Fantastic :) I like its layout to the point of not liking any other. F1-F12 are in a double column at the left of the keyboard. SF1-SF12 are across the top. The cursor keys are in their own grid as are the number keys. The control key is where it belongs above the shift key on the left and to the right of the space bar otherwise. The alt keys are on the extreme right and left of the bottom row. It is heavier than the Atwood. The keys response and sound are very similar to the IBM keyboards---stiff and loud. I've been a touch typist since the early '60s and this is the keyboard for me. In order to balance my review, it is a little bit difficult for me to find the home keys since I suffer from diabetic neuropathy in my hands; been thinking about using some Sugru to provide a bit more feedback. But that is my only quibble. Oh and the fact that they are no longer manufactured <sigh/>