I have a couple of Anova circulators. Their first and the newer Bluetooth one. They have now come out with a wifi model. The Bluetooth is a waste, never use the feature
I use mine a lot. My wife and I both work and being able to put something in the bath in the morning, that would take a bit of time to cook normally, and have it ready when you come home is pretty good. Most things need finishing in the oven or stove top to get the traditional surface texture after coming out of the bag