My current PM 1200 is so loud I tend to only turn it on when I am leaving the shop.
I tried out the new PM 1250 at Woodcraft and was amazed by how quiet it is.
I also like the idea they use in the videos of having the fan blowing the clean air directly onto the workbench...
I've been milling a bunch of white oak the past 2 weeks and the amount of airborne dust is causing me to reconsider my current setup, which includes a 5HP Dust Gorilla, 2 Festool vacs, and a Powermatic PM 1200 overhead air cleaner.
I believe the new PM 1250 is quiet enough you could run it all day 8 feet from your head and not be annoyed.