I didn't have them side by side so I can't say.
Without EQ the E3 is the better headphone for sure, but with EQ the original HD800 is just so good imo. Maybe I'll have to get an E3 home and do a proper comparison.
Had a chance to listen to the E3, Stealth and the Expanse today, and wow, the E3 blew me away. Couldn't believe it was a closed-back and it sounded better than the other two in my opinion.