Just a warning about trackballs: I love them and have used them almost exclusively for probably 25 years. A few years ago I started getting “trackball thumb”.

Just a warning about trackballs: I love them and have used them almost exclusively for probably 25 years. A few years ago I started getting “trackball thumb”. So I advise switching up among various different trackball geometries. (I also use the Lenovo pointing-stick keyboards in the mix. )