I've used Dougs,hooker and TTI...TTIs seem to go up with the gas prices... ..Each has their own good and bad points...Hooker is a true performance,equal tube header and the super comps are really light...TTIs are made for the fit at the cost of the tuned legnths...Not an issue on a street car though...I wonder what the weight difference is between them all... ...Also any header is going to get tight and might have clearance issues up at the 2 inch primary level but by then you're at the 500hp mark or you would'nt be using them.....Anyhow, I seem to keep going back to the hookers on different applications so I guess I like them best for the price,performance and fit...