Whatta Ya Think About Hsu Research Subwoofers?

I also have a pair of ULS-15's in my main system.  I think these sealed subs offer very high quality bottom octave coverage for music.  Some might think that with Tekton DI's you wouldn't need subs--but not me!  I am not about an excess of bass.  Rather, I demand tight, musical bass that plumbs the depths that my main speakers just don't do--especially pulled well out into the room.  I've said before that they complement the DI's beautifully--super high value, nicely finished, tremendous performance.  Buy a pair and be happy.

A HSU is a fine sub until you try a better one.  There are many many subs out there that are far far better for music.  
I’ve owned a ULS15 and a pair of VTF subs and have found several sub woofers since then which completely blow them away.  The funny thing is, when I owned the ULS for instance, I thought it was an amazing sub too. 

Cue the offended HSU owners... 

I found HSU to be a step along the path to finding good subs.  I started out with a couple of Klipsch subs, which were complete garbage.  I then had a couple of HSU subs including the VTF-1, a VTF-3 MK3, and a VTF-3 HO.  The VTF-1 was surprisingly good for the price (200 bucks at the time?).  The VTF-3 MK3 was a solid performer.  The VTF-3 HO sucked.  It bottomed out really easily.  I bought it second hand, so maybe it was damaged, but when I contacted HSU and asked about it, they acted like that was "normal".  

I moved on to SVS, Rythmik, and Power Sound Audio and never looked back.  They all seemed to be better built and to have more output and tighter bass than the HSU subs I had.  Maybe a little more expensive, but more value for the dollar. 

That was a couple of generations of HSU subs ago, so maybe they've stepped up their game with their latest offerings. 

My impression of them was that they are the Emotiva of the subwoofer world.  Affordable and sound OK, but for not much more money you can have better build and sound quality.

Of course there are "better" subs.  But the OP has a budget.  I would also take the above comments with a grain of salt.  The older series models do not perform at the same level as current models.  Also, I much prefer a sealed design for music at this price.  

If budget is an issue, SVS has some affordable sealed subs. I have one of their older SB-12 NSD subs in my computer room system.