For the moment, forget about looks, though I know it's hard...
These chairs work harder than you do! They have serious ergonomic and lumbar options that allow you to position yourself so you are always comfortable and placing as little stress on your back, shoulders, and neck as possible. And the casters allow you to swivel around anywhere you need to be. But please don't use the chair as in-home transportation!
These chairs may seem expensive at first glance. But if you search brands like Miller
there are always options in different price ranges. As long as you stick with a quality brand, you know you will get a performance chair. One thing is certain: Buy a high-quality ergonomic chair, and you should have it for life.