Reviews on spinner exercise bikes

[convergencetoday]

I've been lurking on various forums for about a year now, been doing lots of working out to get where I want but suddenly my knees are just killing me. Id like to get any reviews from people using spinner bikes of any/all names/brands. My friend recommended this bike specifically the spinner pro, but I want some reviews as this is a heavy duty purchase (about a thousand dollars[alot for me=D])

http://spinning.com/en/webshop/product/809/spinner_pro

anyone have a spinner pro? Pro's, con's