Both the Sigma Realmagic DVR and the Hauppauge WinTV-PVR use the kfir. But apparently there is a HUGE quality difference between the two. Why? Sigma Designs REALmagic DVR http://www.cyberport.com/~tangent/video/reviews/dvr.html Hauppauge WinTV PVR http://www.cyberport.com/~tangent/video/reviews/pvr.html -Dan