I've had Outlaw subs in the past, along with Paradigm, Polk, etc. I've currently got a pair of gloss PB-13 Ultras in my living room (13'w x 25'd x 10'h, totally open at back to two story tall great room). When I had the pair of Outlwaw LFM-1 EX's I thought I was in bass heaven and it was great. Then I unloaded those and went to a single SVS Ultra and it was a whole 'nuther league. I immediately went with a 2nd Ultra at the wife's urging to "balance" the look of the room. So my room is an unsealed 3250cu.ft. and I have no problems pressurizing it with deep, pant flapping bass with the subs up front (not near me). Walls shake, windows rattle, and friends say they've never experienced anything like that in a home theater. So, get enough air movement in a capable sub (SVS Ultra, SubM, Rythmic, etc.) with proper room placement and it'll impress.
Now, beyond movies and deep physical bass, I really enjoy music...more than a good movie! I have a system I thoroughly enjoy and took many years to assemble - I feel I've arrived at my audio nirvana. The SVS Ultra subs keep up admirably and blend in wonderfully with my mains. I tinker with various crossover settings and find many suitable settings, hence the subs will do well only playing deep stuff, all the way up to playing nicely if they're crossed over a bit higher up. They don't sound lethargic, bloated, or have that "ported" fat sound people say you avoid with a sealed alignment, at least from what I've heard in my room, with my limited sub sampling. I really enjoy good classical, particularly piano, which can be very revealing with bass notes becoming "boxy" sounding. Not with the Ultras, in my experience.
SVS as a company has stood behind their products as well. I've had one BASH amp die and they sent a Sledge replacement. I've called them on numerous occasions and frequently gotten Ed on the phone to chat with about settings, placement, the weather, etc. Great guys there and a great longstanding company. I remember when a certain other AV123, etc. company was the bees-knees and their sub couldn't be topped for $$$/performance. Now they're gone and many are left stranded with dead sub amps. That's always a hangup I have with newer smaller startups. Not that they don't have great designs, great intentions, or beautiful finishes, I just like to know the company will probably be around if/when I need a 5 year warranty item taken care of. Two of these companies I know of are SVS and Hsu.
I haven't had the opportunity to listen to a SubM, Cap, Funk Audio, etc. and would love to for good comparison. But like some have said, any of these top offerings from these top ID manufacturers will wow you with prodigeous amounts of bass, but also play the subtle stuff quite well, for far less $$$ that it'd take with a "big name" manufacturer.