Thanks for the headsup bro , very well made review , been wondering about taking one of these , and had the exact same concern about the too much knee bending when it comes to the short one. Keep the good work up :)
The cheaper one looks like the Vevor kneeling chair. I made the mistake of getting it and it is very painful to sit in for more than ten minutes because of the seat being way too shallow and the padding being almost nonexistent. This results in your butt hanging off a sharp edge and feeling the wood plank right in the tailbone. I'm back to my traditional office chair until I can swing a higher quality version.
