>>5907643You need a chair that is adjustable to your body.
Any chair you can't adjust is trash.
Sit with your butt all the way back with the lumbar support against the your pelvis.
Don't "sit up straight" instead think "flat back".
Adjust the height so you knees are at a ~90 degree angle.
Adjust the depth of the seat so there is around an inch or two between your knees and the edge of the seat.
Make sure your heels lay flat on the floor.
Don't use the arm rests while drawing.
Make sure your screen is at your eye level. Looking up or down will fuck your shit up. Get you display tablet on a ergotron arm.
If you live in a hot and humid climate you'll probably want a mesh seat, other wise they are not worth the extra cost, plus they provide less support.
Unless you can buy the expensive chairs at reduced prices they are not worth the extra premium.