i keep both my corn and my king in similar setups to my ball python... tub, UTH, hides, water bowl. Nothing fancy. I handle them all pretty much daily, except after feedings. My king was a rescue, and in bad shape when I got her, but was still exceptionally docile from day one. She's a senior citizen though, at around twelve years old. My corn is a yearling, and can be a bit nippy when she wants to be, but has been getting better with regular handling.
I love the different colors and patterns you can get with corns. Kings have some cool morphs, too, but not nearly as many. Still, I think that my next colubrid is going to be another king, and if i ever decided to breed snakes, I'd definitely go with kings.