I had over 20 cases for the Air before I handed it over to my wife, and I currently have 8 for the Pro Max (this doesn’t include returns). Of those, the Pitaka Edge, Apple TechWoven, Beats Rugged, and dBrand Tank have gotten the most use. So if I was rational, I would say those 4 would be my only purchases, but of course there’s nothing rational about what we’re doing here. My guess is that I’ll keep doing what I’ve done for a long time: buy a ridiculous amount of cases, return at least 50% of them for defects or something lacking in the design, after which I’ll still end up with a ridiculous amount of keepers.