My first snake was a Cali King as a kid. My dad let me get it and took me to pick it up. I found it for free in the newspaper and he made it all happen for me....but it had to live in the barn(mom's orders). Anyways it would have never happened without my dad and after he passed I thought back about that often when dealing with my snakes.....for whatever reason.
So with that I decided I wanted to get a King as a remembrance of my dad. I bought a Brooks King from a local shop that breeds and she is awesome. Eats like a champ and had done nothing but grow since I got her. She is a real beauty and took to me fairly quickly.
After that I ran across a kid wanting to get rid of a Spec King to get a Ball. He bought it from one of the online sources and it was still tiny. He just didn't like how active they are.....and I believe they were having trouble getting it to eat. Always up for a challenge I gave it a home and with a little work he is now striking and eating well too. He is still skittish and likes to pee on me when I pick him up. He doesn't bite my anymore though so we are moving in the right direction. Honestly it doesn't pee on me every time now days either. A little more time and he should work out of that.
Both are being kept in a rack with a thick layer of substrate(Forest Floor), hide, some moss, and a water bowl. Very simple setup and very little is needed. I don't mist them even during shed. Not regularly anyways. Occasionally I will but it is just not needed with my standard humidity in my snake room.....but then I don't have to mist my Ball either. Thanks to Texas weather.
Overall I think Kings are great and very easy to care for.