Anyone who says a Tenzo or DAD seat is the same as a sparco or corbeau has never sat in a a real racing seat or taken a good look at them. You think Tenzo's are DOT approved? No, they collapse on impact. You think they're made with the same craftsmanship or out of the same quality materials? No. When the material on a Tenzo seat comes off from simple shifting around while shipping then they are pieces of shit. But hey, you get what you pay for....which is a lot more than a name sometimes.