I ordered my dreambox with the 200 micron mesh filters. As Slief has said, they don't trap as much as a 200 micron felt filter so I tried the 100 micron mesh filters. I still wasn't really 100% happy with those either so resorted to using 200 micron felt filters. I obtained these from china via ebay as they were only £1 (approx $1.20 US) including shipping.
I figure the mesh wouldn't trap as much as felt. That's why I want to use felt throughout the filter sock stages.
Do you have a link to where you got them? How are they holding up to washing/cleaning? I have a dreambox on the way and would like to be prepared. Thanks!