Well seeing as the #1 spot is held by a heat pipe design, I believe its a little bias. Heat pipes allow air and do not give the best coverage as was evident by my Xigmatek. It is also the socket 775 CPUs, it is likely that those things can't even keep up with the i-cores. We already know that the D-14 is a beast, but it looks like a case of bigger/better/faster. I don't think that anyone wants to put in a Heat sink that covers their whole motherboard, So I really think that Heat sink manufacturers should start dabbling in some better hybrid materials and better fastening devices.