I have the original large one, the BOV800XL. At the time there were only two models, the 800XL and a smaller one, which I think is the 650. We had room for the larger one, which will cook a 13" pizza. I am not sure we would use some of the new features that do not add much cost, the slow cook and dehydrate modes, but for $20 more we would probably spend the extra just because. I don't see any need in our household for the air dry function, especially at a cost of $130 more. Family members with dedicated air fryers use them occasionally for French fries and paid less than $100 for them.