Would the Panaflo's 47cfm fans be a better buy over the Adda 50cfm fans. And how good is the quality of the Adda fans? The adda fans run at 40.6dBA, and the panaflo's run at 38dba, however the Panaflos are a bit more $ (Probably more than twice the cost). So which one would be the better buy...me thinks Adda, but dunno