until a few weeks ago, my sub had always been tuned to 16 Hz and i liked it a lot.
then i changed the tuning to 11-12 Hz and discovered a whole new experience in many movies and sometimes on TV.

so far, my sub has been able to take all comers (movies) and more, even if it is not very large, because my room is small and it can be filled quite easily.

in my mind, it's worth it, no question about it.

See: http://www.blu-ray.com/community/gallery.php?member=Gelli
or: Axiom Gallery