Why? The Utopias are clearly better at detail extraction to my ears than the HD800/HD800S (and so are the HE1000V2s for that matter). But no doubt the Sennheisers are the "leanest" sounding of the bunch!
Personally I find the extremely small form factor, light weight, incredible isolation and all with 8 drivers per ear piece quite an engineering accomplishment! (This is from a professional engineer with 20+ years in the electronics manufacturing realm).
Congrats to the Empire Ears team! As I mentioned, these are the best IEMs I've had in my ears and are the most tonally accurate I've heard this side of Focal's Utopias. Simply amazing! It was a pleasure to experience them!
No plans whatsover. Plus I own the SR-007Mk1's and love them as well (though they don't get the listening time they deserve with my SR-009s in house). That said, I'm listening to my Utopias right now and these headphones aren't going anywhere either!