Yes, I do actually! The Enigma is a VERY nice headphone. I actually wrote a review stating as much.
However, in my opinion it's somewhat genre limited. It's extremely beautiful and relaxing, but it falls short when using it for faster music such as rock and metal. The walnut Omni is going to be a much better all-rounder while still maintaining a very pleasant and natural sound. The soundstage is also going to be deeper and more natural (although potentially not as wide).
Overall these are both excellent headphones. I already have fast, aggressive headphones, so for my own preference I might choose the Enigma to round out my flexibility. I think for most people the Omnis are going to be much better value, though.