We have had the Cuisinart version of Anova (countertop steam toaster oven - now discontinued) for several years and agree with all the prior comments that once you will have one you will end up using it every day. We had recently planned to build an ADU and picked up an effectively new Miele non-plumbed built-in for $300 (long story) that we planned to install in place of a conventional oven (based on how often we use the Cuisinart compared to our conventional oven). However, I’m not sure that we would have paid the new price for a built-in and even less sure that I would pay plumbing costs as well to have it plumbed in rather than just buy a countertop unit. We don’t have to refill the tank very often and it is awfully quick and easy to do so. The best argument that I can think of in favor of the built in is a longer expected life and availability of repair parts. However, one could replace an Anova several times before matching the cost of a built in.