I hear ya Larry,
(btw thanks for all posts from others so far)
Here's the deal:
I'm very fortunate to have the current speaker set up so far. But I just can't, at the moment, afford any more than my $600-$800 price range for a sub. (Mind you, I'm in Canada, so that's about 3.2 million loonies for me!

) Boy, I would love a big, booming sub...but my budget is tight, for now.
Another thing is, I can't "afford" to knock my house down. Well, the real reason, is my room is moderately sized...okay, it's just not that big. It's about 20 feet long, 9 feet wide and about 10 feet high.
Anyways, I appreciate all the help I'm getting from this forum. Though I may "appear" like I know what I'm doing with my set-up, I really have no clue. That's why I'm trusting 'strangers' like y'all to help me out. And, yeah, I'm willing to trust a lot of you for your experience.
Then again, I understand where you're coming from, Larry. But, hey, if ever my budget baloons, I'll give you a shout for some advice for some elite subs...but honestly, I don't think I'm gonna get there....sigh...
Update: so far, I'm leaning on the SVS 20-39 PCI.
I've not seen, in person, or heard a cylindrical subwoofer. Is it
that good?
Again, thanks for the help so far.
Jason