The 4-2-1 header design is most widely used these days because it creates a stronger lowend, and if done properly you dont sacrifice any top end. When we performed the header test at Titan the hytech did end up quite ahead in terms of the powerband, over the rest of the headers, but it follows suit with the price point. I will tell you that the DC did not show up last which was quite suprising considering what did come up so far behind that. There were a number of headers that were quite close with their performance and reasonable prices as well. It's all how much money you are willing to spend.