before spending $1000, adjust your chair, keyboard, and mouse so that your posture is good, your shoulders are relaxed and your wrists are in a neutral position. You may not be able to do this with a standard keyboard, but a split keyboard is less than $100. if your chair doesn't adjust, get one that does. I personally like a chair that doesn't have armrests, as they sometimes cause me to raise my shoulders or contort my wrists, and I am comfortable resting my arms on my body/legs/