Since I just jawed Amazon customer service into giving me the full Prime Day discount (thanks rotuts!), the Anova may have just won because of price and the ability to use it without pulling out a phone, etc.
As for the Joule, my largest pots are cast iron, with and without enamel coating so magnetic attachment is not a problem. Obviously if I move into the cooler or rubbermaid container it would be an issue, but as a newbie it is the cast iron for now. This may be one where I handle the items before returning, including how to store.
And I get what Anna N is saying about Prime Day. If I hadn't planned on looking for a sous vide, I probably would have made do with the Whole Foods promotion. The crash, plus trying to figure out what is on sale has largely made it a pain.