Buy the Cosori Electric Kettle.

It is the only one of the three that keeps plastic out of your water and still boils faster than the others.

What was compared

Cosori Electric Kettle, No Plastic Contact with Water, 1.7L, Black | Wide Opening, Easy to... — $36.39
OVENTE 1.7L Electric Tea Kettle, 1100W BPA-Free Water Boiler, Black KP72B | Fast Boiling, ... — $15.99
COMFEE' Stainless Steel Electric Kettle, 1.7 Liter Tea Kettle Electric & Hot Water Kettle,... — $27.99

1. Water that only touches glass and steel
Cosori's borosilicate glass body and stainless filter mean nothing plastic ever sits in the water path. Ovente's clear-view window is plastic right where the water pools, and Comfee never makes the zero-contact claim at all.
2. Every cup boils noticeably faster
Cosori runs 1500W and heats half a liter in under 3 minutes. Ovente's 1100W motor is meaningfully weaker, so every single cup you make takes longer, and that adds up over years of daily use.
3. Trusted by more people, not just newer ones
Cosori holds 4.5 stars across 49,000+ ratings, beating Ovente's 4.4 on an even bigger pile of reviews. Comfee's 4.6 looks better on paper but rests on a third of the sample size, and it is already being replaced by a newer model.
4. Descaling it isn't a fight
The wide mouth and dual-angle lid open fully for scrubbing or partly for a splash-free pour, so you can actually reach the corners when limescale builds up. Ovente and Comfee both stick with a standard narrower opening that makes deep cleaning more of a chore.
5. Yes it costs more, buy it anyway
Ovente is about $20 cheaper and Comfee about $8 cheaper, and that is real money. But a kettle sits on your counter for years, and the extra spend buys glass instead of plastic touching your water plus a faster boil every single morning, which is worth more than a one-time discount.