I have the Fiio X3 (1st gen.) with DUNU's DN-1000 and I'm waiting for Etymotic HF5 IEM's to come soon.
Till then, I wonder if I made a mistake to buy these instead of ER-4(?) as I wanted an uncoloured sound, because DUNU's sounded too V-shaped for my taste after many listenings.
Also, after purchasing HF5's, would be better to buy something cheaper than X3 and sell it along with DUNU's???.
The reason to my decisions were that I can't afford...