Here I am. I've already written and rewritten, and I rewrite it.
a sx spacemouse like that of hunter + mouse from 15 euros with scotch applied on the motion sensor (I use only 2 keys and wheel, I also used a mouse with prog keys, always blinded but, in the end, I just need 2 keys and I find uncomfortable those of the spacemouse ).
a dx, wacom tablet with stylus (70/80 euro )
I've been doing this for years, never had a problem with pain.
the speed of movement with spacemouse and the precision of wacom, are a great help for those who do our work.
I also tried tablets of different brands, they did not satisfy me ( some also had the stylus with the battery inside, a splash )
3dconnexion, it does not have, literally, competitors, but it is worth all the money you spend.
among other things, he also works with different sw, type acrobat reader.