Thanks for that, as I get serious about my search, Honeywell is on the list. My wife has moderate to mid level Spring allergies and some Fall leaf mold allergies so if we are going to do this, we might as well do it so it solves those. We had to stop bringing cut daffodils into the house in the spring because of this. Her reaction is not horrible which is why I said this is mostly about dust, but two birds with one stone... albeit a more expensive stone.