I purchased a $200 Anova Sous Vide Immersion Circulator - 120V Circulator Cooker back in 2015 and have been using it occasionally (once every 2 - 3 months, average cook time 24 hours) without issue for three years. Unfortunately, I plugged it in and started it up on a cook, and quickly noticed a potent burning plastic smell that filled the kitchen. The smell permeated the house. I unplugged the unit and removed the metal cap, to find the plastic casing around the heating elements had begun to warp.
I have used the same setup and outlet with surge protector, so not sure what triggered the "meltdown" but I can no longer use the unit without the burning plastic smell. I wrote to customer service and they stuck to the 2-year warranty policy and offered me $25 discount.
You may find yourselves in a similar position 2+ years down the road. This account is for your reference before you make a new purchase. I find that product reviewers rarely weigh in after having a product for a long time. Consider this one such review. @Anova, a 2-year warranty is reasonable and common among kitchen appliances, as your customer service rep informed me. I don't hold it against you. I just choose to buy another product with better odds for durability.