Hifiman RE 800S is listenable with more bass and tamed but fast treble after 70 hours of burn in.
Now I find sound from Sundara a little bit closed on top although it sounds very musical.
I use earphone when I work on Photoshop.
It is not comfortable to wear magnifying glass on headphone.
Thus I prefer earphone to headphone for my personal reason.
It may be too early to judge Periodic Audio BE IEM only after 10 hours of burn in.
But I prefer open and fast sound from Hifiman RE 800S to the neutral sound of Periodic Audio BE.
To experience the best earphone under 1K$, I placed an order for MASSDROP X EMPIRE EARS ZEUS UNIVERSAL IEM.
https://drop.com/buy/massdrop-x-empire-ears-zeus-universal-iems?mode=guest_open&utm_campaign=Transactional%3A%20Shipping%20Notification&utm_source=SparkPost&utm_medium=email&utm_term=Transactional%3A%20Shipping%20Notification&utm_content=1560968955870.083665385797592302809037&referer=67VW66
Thomas