I don’t know about any other options (I haven’t seen any), but the Pitaka case is fantastic. I’ve had it on my iPad Pro 12.9 for the last month and have zero complaints — other than cost of course. The texture of the case makes it MUCH easier to carry around as a tablet, use one handed, and also makes the iPad less likely to slip off of my lap or slip down when propped up against my legs/pillow while reading in bed.