I have an Anova from a few years ago, 800W I think. It has bluetooth but not wifi. I used the bluetooth twice, ever. Pointless feature for me. I like the anova since you can use it without any other devices. It works great, I wouldn't want one with a permanent clip on it, I have a cooler modified and if it had the clip permanently attached it wouldn't work as well for me.
I have the Anova 800W Wifi.
The Wifi allows you to do delayed cooking, which I am doing right now. Fill the bath with 50/50 water/ice, put the food in, and you'll get a notification if the temp hits 40F (danger zone). The impeller spins every few minutes to circulate water around the ice. This is handy for times when I want something to finish right when I get home. Not a critical feature and I don't use it often, but handy when needed.
+1 on the Joule. The phone-only interface scared me, but it’s been flawless. It will keep a 60 qt cooler at perfect temp without even breathing hard, and the clip/magnet attachments are awesome. It is also so little that SWMBO doesn’t gripe about it it in the cabinet...
Wow! A lot of choices.... I have Anova from a few years ago, 800W Bluetooth and very-very happy with this device. Very reliable.... I fact I was thinking about buying new Anova - Pro version - but price bites... It's $399.