i've seen this recommended as an alternative before, is this close enough? http://www.amazon.com/Clinical-Health-Services-Inc-Saddle/dp/B004YWTGO6/ref=sr_1_1?i

i've seen this recommended as an alternative before, is this close enough? http://www.amazon.com/Clinical-Health-Services-Inc-Saddle/dp/B004YWTGO6/ref=sr_1_1?ie=UTF8&qid=1340151741&sr=8-1&keywords=saddle+chair http://www.amazon.com/Clinical-Health-Services-Inc-Saddle/dp...