I should have added that I use at the moment an iRiver H340 (modded with msata 256GB) and a Sansa Fuze. This will be my first incursion into HiRes DAP. So not sure not being an expert or having the experience if I will notice the difference between the X3ii and X20. Better said maybe the X3ii will blow me away considering the devices I had before. I have read the headphonics review previously. Overall is good but not very convincing about the sound (I guess he knows more and is comparing with other devices. I am no expert). And the mentions it doesn't respond well to EQ. Also I read that the usb DAC doesn't respond well (maybe fixable with updates). How is the X20 in that department? But that isn't a primary use for me. Is Xduoo better than Hidizs in the software updates front? I was determined to get the X3ii... but now seeing the X20 I am tempted although I think I prefer the keys at the front instead of the side. To any owner of the X20... is it easy to control with the side buttons? Too many questions. As always...decisions, decisions, decisions. I am surprised there are no individual threads for each player. Thanks for your comments.