Thats a pretty serious squirrel cage and not a bad price either. I'm not an expert on fans by any stretch but my experience so far has been that the centrifugal fans are better at dealing with negative back pressure (longer ductwork runs) than the squirrel cages which seem to be better at "pushing" air rather than pulling it. I have no clue why that is - maybe if I duct taped the hell outta my squirrel cage it would seal air leaks or something but I try to use about 15 feet of that flexible ducting crap and the squirrel cage is hardly pulling on the intake but has plenty of air output so it's getting in there somehow - I don't think all the ductwork helps it at all but my centrifugal fan has no problems with it...that thing moves some serious air.

So the bottom line is: how do you want to use it? Push: Squirrel cage is fine Pull: Centrifugal all the way.