we can argue endlessly which is ‘better’. But some people, who have had both, prefer the downgraded version. Then it’s coming down to a preference between transparency and perceived sound profile being preferable (warm or dark). I think it’s really interesting and also an excellent position to prevent upgraditus, which stalks these forums. I just got a pair of aeon flow closed, I’ve only listened a short time, but the perception of the drums is crazy good, it’s like your ear is just 10 cm above the kit. Hd800s were/are good, but they’re not as involving. The Hd800s cost twice as much. They’ll still have their place I’m sure, early days, just saying.