An Alpha with a 38CFM fan would be better than a Taisol with a 20 something CFM fan simply becuase it would have more air moving over it. If both heatsinks had the same fan then they would probably be pretty close, they're both good 'sinks. If those are your choices (and you can stand the noise) I'd go with the Alpha. The Delta 38CFM fan runs at 7000RPM so it's a noisy b!tch.