I use logitech's trackball and also have kennsingtons 4 button track ball, both hooked up at the same time. I use one for pro tools and one for reason as I use 4 monitors (one just for reason)....the keyboards are on the other side of the room so 2 mouses (mice) helps a bit.
If you haven't tried a trakball maybe its time, it REALLY helped out my arthritis/carpel tunnel and its much easier to get around.
I use an old keyboard I got with a carrilon audio computer 3 boxes ago....it has stickers they put on many years ago and none have come off, just rubbed down allot, its gotta be5 years old or older but works like a charm.
Having the shortcuts on your keyboard will help your workflow
I know this is about wireless but sorta related