I have servere arthiritis in my hip. I can't seat comfortably most places. 
I got the blue chair and it's just the right height. Not too low and I can use another couple of inches. BUT IT WAS SOOO COMFORTABLE AND I DIDNT HURT WHEN I ATTEMPTED TO STAND UP... 
I'M NOT mechanically inclined at all.. I put together AL BY MY SELF IN 3 EASY STEPS...