Wow, I wish I read this guide months ago when I was trying to research split keyboards. It would have been a lot easier to see what the options are. I eventually settled on the nocfree keyboard and have been relatively happy with it. It definitely helps by letting me split the keyboard very wide and open up the shoulders and back (slightly wider than shoulder distance). It feels like everything these days is trying to squish our shoulders/back into a hunched position. As someone with back issues, I have to mindful of my posture. Split keyboard + adjustable standing desk is great for the scapular area and the lower back for me