Nick wrote:
I am looking for a dustless drywall sander, but have been unable to
find reviews of the various products. Does anyone have experience with
the Porter Cable 78OO Series?

Thanks

Nicholas Falkoff

"dustless" and "sander" don't sound compatible to me. Two words:
sponge
method

Sincerely,
your local anti-drywall-sanding crusader,
-Kevin