i have a office chair and a folding chair with no arms.  i put a memory foam pillow in the seat of both to make it more comfortable.  there is a tight space between our bed and the windows that i would like to use a portable guitar stool on.   i have 6 choices, all cost $55 and less. so no suggestions over $60 please.  3 have wheels, 3 have no wheels.  most are on either ebay, amazon, or walmart.  and i cant try them out in their warehouses.  the wheels can be locked by putting some leather scraps we have into the wheels.  i am aware of the need to keep from rolling.  okay, so which one would you get?     all are about 20" off the ground, except #6, which is 24" hi.  thanx for your advice.   dale