I had a lot of problems with the pain in the arm strings as you mentioned.
At some point I switched to slim keyboards, and to a trackball mouse. I also tried to use a magic trackpad in between but that made it worse.
Nowadays I am using the Thinkpad USB keyboard combined with a CSL vertical mouse and I don't have any string injuries anymore. I mainly chose the keyboard because it is actually one of like 3 that doesn't have batteries and doesn't have a numpad that I don't use anyways.
As a mousepad I am using an aluminium/teflon mousepad I have for like 20 years now. It is superflat and doesn't make my arms stick to it while moving.
As to your mouse movements: the thinkpad usb keyboard has an additional middle mouse key, which does exactly that. It's just so comfortable to use while browsing.
For lots of mouse movements, like in CAD tools or other mouse-heavy environments I still stick to using my vertical mouse though.
At some point I switched to slim keyboards, and to a trackball mouse. I also tried to use a magic trackpad in between but that made it worse.
Nowadays I am using the Thinkpad USB keyboard combined with a CSL vertical mouse and I don't have any string injuries anymore. I mainly chose the keyboard because it is actually one of like 3 that doesn't have batteries and doesn't have a numpad that I don't use anyways.
As a mousepad I am using an aluminium/teflon mousepad I have for like 20 years now. It is superflat and doesn't make my arms stick to it while moving.
As to your mouse movements: the thinkpad usb keyboard has an additional middle mouse key, which does exactly that. It's just so comfortable to use while browsing.
For lots of mouse movements, like in CAD tools or other mouse-heavy environments I still stick to using my vertical mouse though.