I have a simple planck eotb, and carry it everywhere I go. It's really convenient. I think I got used to typing on it in only a couple of weeks, but spend the past few years tweaking my custom ambidextrous layout.

Some of my personal favorites are:

• having backspace+ctrl combined on one key, enter+shift combined on another key.
• Having enter and backspace on both sides of the keyboard, so I can use either hand to use them
• Having a single hand numpad when holding a layer key. Very practical for number stuff.
• Putting any computer to sleep, or changing volume without having to look for the right key on my keyboard.

I put together an olkb planck 40% kit years ago, and it's still my main keyboard for day to day use. (programming, gaming, writing, anything really) The main thing I like about it is that I can just put it in my backpack and carry it with me. It's nice to take my laptop to a cafe or library and still have my good keyboard with me.

I'm not even represented. 40 % anyone? nobody?