When comparing IBM Lenovo ThinkPad SK-8855 USB Keyboard with Trackpoint vs Model M, the Slant community recommends Model M for most people. In the question“What are the best keyboards for programming?” Model M is ranked 14th while IBM Lenovo ThinkPad SK-8855 USB Keyboard with Trackpoint is ranked 30th. The most important reason people chose Model M is:
Buckling-spring switches are hardly used anymore, but they give some of the best tactile response when activated.
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Pros
Pro TrackPoint - no need for mouse
Let's you keep your hands on the keyboard all the time.
Pro Well designed in details
For example it has keyboard tilt for more comfort.
Pro Tactile and "clicky" buckling-spring key switches
Buckling-spring switches are hardly used anymore, but they give some of the best tactile response when activated.
Pro Very sturdy
Although heavier than a modern keyboard, this keyboard is built like a tank. There is no flex, and the components were built to last.
Pro Solid construction
Quality construction, good materials.
Pro Clear separation of key groups
Pro Attitude
Clearly signals that I'm serious about what I do and how I do it.
Pro Removable / replaceable keycaps.
With a hook beneath the caps that you have to get to, you can detach those keycaps and replace them with others.
Cons
Con Not officially sold anymore.
Con High price
Con No numpad
Con Noisy to type on
Floss mod is available for the Type M to make the keyboard a little more quiet. However, since it's still a mechanical keyboard, it will be noisy. This keyboard will not be appreciated in the office.
Con Very hard to acquire
Out of stock for decades.
Con Ugly as hell
Con Some driver issues with USB-only computers
Using a PS/2 to USB adapter can kill rollover.
Con Very large
Measuring nearly 20'' x 8.5'' x 2" ( 50 x 21.5 x 5 cm), this is a very big keyboard. It will be hard to fit into a minimalistic styled desk setup, and might even be too big for some smaller desks.
Con Lacks some modifier keys
The Model M lacks both of the meta/super/cmd/Windows (depending on the OS in question) keys and a menu key.