You certainly need a Zoji first!
On the airfryer plus side, I under-estimated how much I'd use one. They take a load off my main cooker and find myself using them for anything from sausages, to pasties, to chips, to roast potatoes, to small joints of lamb .....it goes on. They are wonderful small convection ovens.
Buy both!
I saw you banging on about the Zoji and thought I'd look into it. There's no chuffing way I'm spending that much money on a rice cooker.