I've heard both cans but with two different systems; environments. I can often be read referring to the mids of the HE-6 as being clear as a bell! Between the HD800 and HE-6, I'd give the nod to the HiFiMAN HE-6. "In this corner, weighing xxx grams... wearing Black trunks in Black trim... and still heavyweight champion can of the world!!! Please give a large round of applause for..." ok 'Silent One' just calm down!