I’ve owned both, the KAs a lot cheaper. But the Ooni is noticeably heavier so it feels a lot better built. It also comes with a cover for the small scale that doubles as a tray for weighing out small things. The KA feels almost too light, while I haven’t had an issue with it. I don’t think it would hold up like the Ooni. One plus for the KA (besides price) it can weigh in hundredths of a gram on the small scale. Where the Ooni only does tenths. Tenths is plenty accurate for 99% of people though.