Digital BW, The Print

Hi all.  A while back I posted a question about using a fluid-mount 
film holder with the Nikon 8000/9000 scanner but got no replies.  
Doesn't anyone on this forum use Kami (i.e."lighter fluid") to mount 
their film for scanning?  I've heard that it helps a lot with dust, 
scratches and Newton rings in comparison to the Nikon medium format 
glass holder.  I do not experience these problems to a significant 
degree but I was wondering if there are any other benefits to fluid 
mounting in comparison to glass-only (e.g. sharpnes, resolution, 
tone, etc?).  If so, are any additional benefits significant/notable 
enough to warrant the $500 pricetag for such holder kit.  The only 
source I know of is Aztek.  Does anyone know of any other (i.e. less 
expensive) sources?
Thanks, Peter.