Hi everyone, I am thinking of getting a new case with a side air duct. Are these really such a good idea? If I could find an air duct that fit well for an si-97 with a 90mm fan, that would seem to work very nicely. It appears most air ducts are designed to fit an 80mm fan, is this correct? However, if air ducts don't make that big of a difference, perhaps it would be better to just keep my case with two front intakes.