[MailNerd]

I have found a trackball to be even better than a vertical mouse. Only your thumb moves.

Otherwise it's also Ergodox for me. I switched to Colemak at the same time, also have a programming layer ()[]{} etc. In addition I have a layer for cursornavigation and selection, word wise/char wise/start&ens of line/page wise, comparable to vim mode, but using the default shortcuts for Windows and macos (with the help of Karabiner)

It took a few weeks to get up to speed but I couldn't be happier.

[ftcHn]

what trackball are you using?

[MailNerd]

Logitech MX Ergo

https://www.logitech.com/en-eu/products/mice/mx-ergo-wireles...

Note that the tilt only has one level (flat and tilted), the animation might make you think otherwise. I use it in tilted mode.

It is highly customizable using the Logitech options software which I am using on both macOS and Windows. For example you can assign actions to all the buttons that are dependent on the running program, and even involve custom key combinations.

The only downside of the trackball is that you have to clean it once in a while, when the pointer appears to be moving very slowly - simply eject the ball by poking a screwdriver into the hole at the bottom of the mouse, clean out the accumulated dust and push the ball back.