While I don't use the Kinesis Advantage much anymore due to my own personal RSI journey, I did use one for over 10 years primarily for programming. It did take a 3-4 weeks to get fully used, but then I couldn't imagine using anything else. I highly recommend that style of keyboard.

I also quite like keyboards like the Sofle, Iris, Lily and so on… A while I did dive into the 34 key space for a while, I do prefer some extra.

I tend to cycle keyboards, I find it helps keep the pain away. So I have a few favourites. I also switch between left and right hand for mousing or a trackball, which helps probably more than the keyboard!

I’m switching cause it now causes me great discomfort.