Know the market's top brands, they are the best for a reason. Take the DXRacer gaming chair for example; the racing series features 3-dimensional armrests and a fully adjustable backrest to fit your personal preferences, plus the series' many models are available in a wide range of cheerful colors and designs to your choosing. More top brands are: Clutch Chairz, GT-Omega and LEVL Gaming.
Buy for the long haul. A good gaming chair is not necessarily expensive nor cheap either, you should however make sure that whatever price you pay for it, it is one that lasts, that it is worth the investment. A reliable chair will not sink due to a daily use or cause you discomforts that a regular chair might cause.
Enjoy the chair's style. colors and styling options of gaming chairs differ from office chairs in that most of them usually come in a variety of bright and fun eye-catching colors to make them stand out. They are also designed to resemble racing chairs used in simulators so they are much more adjustable and have smart reclining functions. You could of course go for the more solid option, it is totally up to you.
For conclusion: the long-term investment gaming chair is probably the smartest one, it will also be the most comfortable option and will be well worth it!
Choose a model that fits your body type, it is better to purchase the right chair for you than to be sorry later on.