I agree that at this budget and room dimensions, a sub may be superf. In general however subs are useful for more than just loud explosions. A sub will even benefit a solo flute, for example, by improving the sense of space around it. And by relieving the lowest end duties from the main speakers they tend to sound better. A lot of the music that I listen to has low end percussion used subtly. One usually appreciates it during live performances because it always seems to be missing in two channel, but a good sub will musically reveal it.
Opinions before purchasing
I've done a bunch of research on this sub and others and am starting to solidify my first real stereo system. I've used a 60 inch TV and very basic soundbar for years now and I'm moving to a 120" X3000i projector and real sound system. Room setup is 12x12, closed basement room. Going to mainly utilize the projector for movies/shows with some gaming thrown in there off a PC.
I've already purchased the Denon S760H since it seems to be able to do most things that I'll need and has some nice features and everyone loves it.
Currently debating between bookshelves/sub and towers/no sub, specifically between Airmotiv B1+ and a Speedwoofer sub or Airmotiv T1+ towers without sub. I've been happy with the soun bar for years and I tend to not like loud sub noises anywyas (spent enough time in Iraq and Afghanistan around loud noises), so I feel like I may not miss it? Room is also relatively small so a lot of power isn't needed. Either way I would go with the Airmotiv C1+ for center channel as well. Will probably stay at a 3.0 or 3.1 system for now and upgrade later.
Curious on everyone's thoughts here about the bookshelf/sub, towers/no sub decision and choices of equipment as well. Trying to stay around the 1000-1500 total budget range. Thanks for the help!