This would be the one I would buy. Only downfall is it doesn't have adjustable legs.
http://www.cabelas.com/product/Cabe...gclid=CNiBxvq_vb8CFSJo7Aodcj8Aqw&gclsrc=aw.ds
I have 2 of these. http://www.primos.com/products/ground-blinds/qs3-magnum/
They are comfortable and the height is perfect. With the triangular shape there is no bar along the front to press in to the back of your legs. They also take up less room in the blind than bigger chairs. Oh and they are easily portable too.