Subwoofer suggestion to Integrate w/ Meyer HD-1's

As I have been breaking in my new Meyer Sound HD-1's I keep thinking a sub would improve things (their response is flat to 40 Hz and within +/-3db at 32 Hz). They do double duty in the Home Theater so the LFE stuff is somewhat lacking and the bottom octave seems to be missing on music tracks as well. I am thinking it will get better as the drivers loosen up but I don't know if it will be enough. I once heard some Quad ESL-989's that I thought were full-range until a REL sub was turned on that was crossed over at about 30Hz. The Quads seems to be more effortless and the room was "loaded" with sound. I am wondering if I will notice the same thing with my monitors.

The details most people leave out:

--My room is approx. 17'd x 28'w x 9’h and I don’t have a ton of floor space available.

--Other equipment is a Denon 5910 with Upgrade Co. signature mods, Bel Canto Pre3 or a Odyssey Candela Tube pre, a Boston Acoustics Pre/pro that
may all be replaced soon with a Meridian g68 or 861.

--In addition to TV and movies, I listen to a lot of music. About 50% of the time you’ll find live Grateful Dead (I have most Dick’s Picks and many other live recordings in addition to newer DSO live recordings) in the player. The remainder is pretty randomly split between bluegrass, acoustic and electric blues, acoustic and electric jazz, reggae, Motown, rock (mostly from 60’s and 70’s), jam bands, and folk/singer-songwriter stuff. I do not listen to classical, electronic, rap or pop music.

--Budget is as little as I have to spend to do it well. I guess that means I would like to spend $2000-3000 (used) but if I need to spend more to make things integrate and work right I can go quite a bit higher.

Thanks.