Wirecutter

This immersion circulator is accurate, impressively easy to use, and affordable.

TechGearLab

If you don't need a full-sized sous vide machine, check out a smaller device like the Anova Culinary Precision Cooker Nano. This sous vide can keep temperatures super-stable for look cooking times. It is simple, intuitive, and features outstanding temperature control. Though it doesn't circulate as fast as some models, it still circulates quite well, and we love the smart features available through the Anova Culinary app. You can find a number of recipes to make from preprogrammed instructions or create your own in this app and save them to use for future meals. 
The Anova Culinary Precision Cooker Nano's heating unit is smaller and less powerful than some larger models, so it takes longer to heat up initially. It can also take a bit of time to overcome the addition of food and get back up to temperature. All in all, the Anova Culinary Precision Cooker Nano is a great choice for those on a slightly tighter budget who still want a premium sous vide that excels at holding temperatures. It calls for a bit of patience and willingness to preheat your water beforehand. 

If you don't need a full-sized sous vide machine, consider a smaller device like the Anova Culinary Precision Cooker Nano. This sous vide can keep temperatures super-stable for look cooking times. It is simple, intuitive, and features outstanding temperature control. Though it doesn't circulate as fast as some models, it still circulates quite well, and we love the smart features available through the Anova Culinary app. You can find a number of recipes to make from pre-programmed instructions or create your own in this app and save them to use for future meals. 
The Anova Culinary Precision Cooker Nano's heating unit is smaller and less powerful than some larger models, so it takes longer to heat up initially. It can also take a bit of time to overcome the addition of food and get back to temperature. All in all, the Anova Nano is a great choice for those on a slightly tighter budget who still want a premium sous vide that excels at holding temperatures. Keep in mind that it does require a bit of patience and willingness to preheat your water beforehand. 
Read more: Anova Culinary Sous Vide Precision Cooker Nano review

Best for Most

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Ready to dive headfirst into sous vide cooking and want the best product on the market? Our recommendation is the Anova Culinary Precision Cooker AN500-US00. The powerful circulation and precise temperature accuracy make this device an easy choice. The interface on the machine itself is super intuitive, and there's also a smartphone app that gives you the ability to set the time and temperature. It's simple to use, and we were beyond impressed by its outstanding performance in our temperature accuracy tests.
That said, we were disappointed with the length of time it takes for the Anova Culinary Precision Cooker AN500-US00 to heat water. In our testing, it took cold tap water nearly an hour to reach cooking temps. There was also some fluctuation in temperature, which isn't ideal. Still, the Anova is our top choice for anyone searching for a top-of-the-line machine.

Budget Pick

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If you are shopping on a budget and don't mind a fairly bare-bones option, we strongly recommend considering the Wancle Thermal Immersion Circulator. This machine usually retails for quite a bit less than the top models, and we found that you can make some absolutely delicious meals with it. Its circulation pump performed impressively well in our tests, and it's pretty easy to use once you become accustomed to the interface. 
However, this unit doesn't include any smart features or other ways to monitor it remotely. It's also on the larger side, making it more cumbersome to store. The spring clamp works for most containers without issue, but you might have some problems if the vessel has thick walls or a larger lip. It also wasn't the most impressive in regards to temperature accuracy. Overall, we found that Wancle's value far outweighs its flaws and think it's a great option for anyone with limited funds looking to get into sous vide. 

Sous Vide Machine Comparison