For those interested in a Sous Vide immersion cooker, I highly recommend the Anova Version over the Nomiku.
The Nomiku is a bit more versatile with respect to the size of pot it can be used with, due to the fixed fastener on the Anova. However, this is more than made up for by the significantly larger range of immersion depths the Anova will work at. Additionally, the Anova gets up to full temperature faster, has a more secure fastener, and unlike the Nomiku, it can be opened up for cleaning in the event a food bag comes open in the water, allowing you to clean out any congealed gunk inside the device. The Anova also lets you adjust the direction of the water output.
The Anova is a bit bulkier - it has its AC power supply adapter integrated into the unit itself, while the Nomiku has a brick as part of the power cord
Even if the Anova were slightly more expensive than the Nomiku, I wouldn't hesitate for a second to recommend it over the Nomiku. When you consider that it's actually a hundred dollars cheaper, the choice is a no-brainer.
So unless the slightly smaller design is extremely important to you, get the Anova