Emptor Gasket
Even with a crummy emptor gasket, a Kirby will spew less dust than a Hoover Convertible! That's the only machine I have ever used that I actually had to dust AFTER I vacuumed.
The truth is that if the gasket is in good shape (new ones are still available btw...) and the bag is well washed and rinsed with some fabric softener to puff up the fibers, they will leak very little. If the bag is cared for, you can even pop it during use and it won't belch dust. If they're well cared for, the Kirbys are actually great.
