Flex fan or clutch fan

It depends on the type of solid fan. The factory solid fans were REALLY good. How much HP does a solid fan really take? 5-7 ? MAYBE? I agree the clutch fan is really good. Great compromise between max cooling and mileage and power saving. But if you HAVE a good factory solid fan don't be afraid to use it. Especially if you don't have room for a clutch fan.