All Seedy said was that 530 is a potential whp # for those turbos... he didn't say it was cheap... there are always ways to dispute what one person has done no 2 cars are alike... but on an average basis the 530BB's are more responsive for daily driving that is why they ARE smaller and BB... it's all an opinion this opinion is supprted by numbers... it's a preference for how the car will be driven... this is a lengthy discussion for no reason