The AF7 Pro, has the MX-1 thermal pad, which is better than most of the thermal pastes available. And it has copper heatpipes, which does a very good job at cooling. It's recommended here, almost everyday, and most people here haven't heard of a Spire cooler before. The AF7 Pro also has been reviewed many times, and it's one of the best bang for you buck CPU cooler, since it's inexpensive, at an average price of $25.