I love my input devices. I've had the Logitech Trackman Marble FX
mice for about 5 years now, and Microsoft Natural Keyboards for about
7 years. I just got the new Microsoft Natural Ergonomic 4000 to
replace a keyboard I had to leave in Holland, and the new one is
so sweet. Just beautiful. Input devices are important, and have
totally helped my RSI. I used to have it pretty bad, but a combination
of different devices, frequent breaks and yoga have made it better.
Still, for about a month I was using my Playstation Linux keyboard
as my main input device, and I started to feel some pain again. Back
to proper input devices for me.