The headrest is beneficial if you are doing a lot of work in a tilted or reclined position. Equally if you suffer neck pain you will find that it is important to have a headrest. It may be that a headrest is not generally as important for you. In our opinion, however it is an important function on an ergonomic office chair if you are working long hours and also handy for gaming.
When looking for a headrest you ideally need one that is full adjustable. Most ergonomic office chairs have a headrest that is height adjustable.
But in addition to this you should look for an headrest where the headrest also has the capability to rotate so that you can more precisely provide the support that your neck and head needs. We would recommend the SIHOO Doro-C300 which has a height adjustment with a rotation function.
Our Expert Review of Other SIHOO Office Chairs: