I know: a fan is a fan, but please indulge me. I've got to install a bath fan in my master bath(small-5x8) and was thinking a 70-100 CFM fan should be sufficient. I've been looking at the Broan and Nutone's at Lowe's and HD. I'd like to keep it at or under 1.0 sone(for quietness)and reasonably priced(around $100). If you were gonna put one in your bath, which one would you choose for exhanges-per-hour effectiveness and quietness? I'd appreciate your comments, suggestions? Thanks.