I can't add much to the other reviews, other than they are 100% right on.  We really don't like to run the AC in our apartment at night (and don't like paying for it) but with our Vornado running on the lowest setting and pointed just over our heads, we are as comfortable as possible.  Be sure and get one with the continuously variable speed settings, so you can run it really slowly (and quietly).  No fan is completely silent, but you can hardly hear the motor at all, just the woosh of the air around the blades and through the vent.