I have to agree with Atmasphere's comment about accuracy, but with a slight reservation. I'm three weeks into my home trial of a pair of Essences. They possess the same 10" wide bander, but unlike the Omen, they use a ribbon tweeter. I've been experimenting with a variety of tube amps and taps. I'm currently using a push-pull EL84 amp that produces 22 wpc.
Since the speakers are still breaking in their character changes gradually. However, at this point one thing is very clear. They are capable of revealing all sorts of details. So far their presentation is one of rock solid images with a deep sound stage and plenty of air. Voice is reproduced in a fleshy, three dimensional manner. Piano, whether from a CD or LP, is stunning in tone, decay and resonance.
If anything seems out of whack at this stage it's the bass. While the Essence can produce solid bass (try Lyle Lovett's "She's already Made Up Her Mind"), it doesn't seem to blend seamlessly with the rest of the frequency spectrum. To my ears that makes the midrange stand out a bit too much and emphasizes the perception of "accuracy." At this point this may be a break in issue. I've got less than 100 hours on them. The wide bander uses a pleated surround which takes a notoriously long time time break in.
As part of a special promotion, I was given a 90 day home trial, so I'm in no hurry to rush to any judgement. I'm encouraged by what I'm hearing.