The application would determine the choice between the Behringers and Hsu's for me. The Behringer's are neutral, very flat, very low distortion, solid speakers. Very nice soundstage- stereo panning is invisible, and absolutely excellent off-axis response. I got a really good deal on mine, got a pair for 130 before taxes. They are built as solid as a tank too, large and fairly heavy speakers (25 lbs- too heavy for most speaker mounts). The problem with these is they are 4 ohm speakers, which would present a problem for many medium to lower end receivers nowadays. There is it's little brother speaker, the 2030p, which is 8 ohm, thus low-end receiver friendly, and has all the advantages of the 2031's minus the powerful bass. But that shouldn't be a problem with a good subwoofer which is well placed and calibrated. Both of these are really meant for studio work and sound engineering, but they work fantastically well in home audio, if you can get past its 'industrial' aesthetic. They are front vented speakers, unlike the Hsu's, which are rear ported. That means you can place them right up against a wall if you need to, where as the Hsu's really need a bit of space behind them, for the ports to breath. The Behringer's do not have a matching center, unlike the Hsu's.
The Hsu's look nicer, at least they will blend in with the room better, and right now they have a sale on the espresso finish, which is very nice and glossy looking. Like I said before, I think the Hsu's sound resembles that of a commercial theater more They hit a bit harder, thanks to the horn-loaded tweeter. They sound nice with music too, in fact I use them for music more than I ever do with movies. Whenever I hear a tune somewhere which I like, I wonder how it would sound on my Hsu system. Not that the Hsu's really color the sound, I just have the system setup well so that it has a full, rich sound. The Hsu's can be cranked to very high volumes without clipping, I have had them hooked up in a bunch of different systems since the time I have had them, and they have sounded great with all of them, from 50 watt amps to 200 watt amps. If you want something you can crank to zero and not worry, the Hsu's are good for that, and still sound good. Like I said before, they would be the speaker to get for a large room.