The type of chair that will best suit your needs usually depends on these factors:

1. Length of use: Do you need a chair for a full eight-hour workday (or more), or will you only use it for a few hours in the evening? Generally, task chairs are not intended to be used for more than four hours at a time. Executive chairs and ergonomic mid-back chairs, on the other hand, can keep you comfortable for 6-8 hours or longer.
2. Work environment: Do you generally sit stationary at your computer, or do you move around your desk a lot? If you work a lot with your hands, for example, then you probably want a chair without armrests since these could get in your way of your movement. However, if you sit in the same position for several continuous hours, then consider a full-back executive chair with lumbar (lower back) support.
3. Space restrictions: Mid-back and executive chairs can be heavy, wide, and tall. If you work in a smaller cubicle, you may be limited by the chair’s footprint. Task chairs, on the other hand, are compact and easy to fit into tighter spaces.