When he first got it, ranked it second place behind the D8000, in the - rank your Headphones thread.
Later on, ended by ranking it above it. Usually it goes the other way around. Honeymoon period aside, you get excited and astonished the first time you listen to that new headphone since it brings something fresh, but the more you listen, you will also start to discern all of its flaws and since we are talking about a 500€ headphone new, it has many for sure.
So someone that owns and likes the Final D8000, later on, ends by putting the inexpensive Fiio above it, as a overall HP, I don´t know but it certainly caught my eye and for the price, sooner or later, it deserves my attention, especially because I like Bass and it seems to be its biggest quality.
Space and imaging is better on the D8000, but overall he states the Fiio has the best bass he ever listened to, still with good detail, not unbalanced as one could think. Not dark, muddy or lacking resolution. It seems to scale well with good gear, so as long as you have this in mind, it could be a HP performing above its price range but serving tastes that gravitate towards the lower-end preference for sure.