After years of using a Magic Trackpad, I got a Logitech MX Ergo trackball. It has taken a little getting used to, but I like it. I can put it between the halves of my keyboard which is better ergonomically, and switch it between connecting to my iMac and MacBook Air with one button. Thus really helps when I am working from home on my laptop. The angle feels very natural once you are used to it.
