You will not be disappointed -- the Omen Defs are a terrific speaker. I have had a couple of pairs now for about 4 months (one upgraded pair and one regular pair) and they are giant killers in my opinion. A few things I have learned that might help if you have not had Zu speakers before. First, they take a while to break in -- about 300 hours or so is what it seemed to get the bass to really start coming together for me. Also, they take some tweaking to get the bass right with the gap distance between the bottom of the speaker and the floor. Mine are on carpet, and I ended up using a piece of 12" x 12" .75" MDF under each speaker, and that seemed to really help tighten the bass (also a whole lot easier to 'slide' around during setup than dealing with the spikes). By raising and lowering the gap at the bottom you can really fine tune the bass. I think a lot of people conclude they do not have deep bass because they are somewhat finicky about this gap distance. When I finally got mine dialed in, they are pretty much flat down to about 30 Hz (my gap is about 1/4" to 3/8"). The bass is good enough that I do not find a subwoofer necessary, and I am kind of a bass freak.
The other thing I discovered is that they like to be farther apart with greater toe in than other speakers I have owned. My room is about 15' x 35' x 8', and I have them on the short wall, about 20" from the side wall and about 5' out from the rear, toed in where they would cross a few feet behind my head (I sit about 11' away). They are tone champs, and are capable of tremendous imaging. I found that changing the toe in even a 1/4" or so can make a large difference.
I am interested in hearing your thoughts once you get them set up. Just be prepared to do some tweaking to get the full potential out of them, but once you find the 'sweet spot,' they are something special.