In that post you say:
"I use the 150 micron Polyester Multifiliment version of these:"
In this thread you say you use 10 micron. Is there a typo in one of your statements, or have you changed to the 10 micron since that other posting?
The 10 micron is felt and the 150 micron is multifilament mesh (both types are polyester).
EDIT: also, the website says the nylon ones are considered cleanable. How well do the polyester ones clean up?
What size bags are you using for your keggle?