I have the 6 qt Duo 7 in 1. It is perfect for me. You can cook a lot or a little:: one cup of rice vs 4 cups of rice, two chicken breasts or a whole chicken, one boiled egg or a dozen. I knew I would
never use my phone to control/operate the Smart version, and I was not interested in the "sanitizer" feature on another one. You can decide what features are important to you and if you are willing to pay the extra cost to get them.
This chart was the best thing I found when making my choice of which to buy: Hope it helps you.
https://www.hippressurecooking.com/w...right-for-you/