Dropped my X3 once on the bathroom floor and now the display has only backlight and no text. Unlucky so I got the X5. I take that back. Lucky as it prompted me to get the X5.
I really like the X3 so I didn't expect that much of an upgrade with the X5. It blew me away. Obviously it is a matter of personal preference as well, but for me the X5 is almost a revolution over the X5. I like signatures that are a bit warm and bass heavy so you would think he X3 was perfect for me, but the X5 have got it just right. Maybe it has something to do with my headset (P7) as well. As the headset is a tad warm and bass heavy - it might be just better combined with a player slightly less so than the X3.
What really separates them for me though is the openness. Can't believe a player in this price range can give you this kind of openness and power.
Not a big fan of the UI as usual with Fiio, but it doesn't bother me that much. Also would be great if it was a bit more portable, but again it doesn't really bother me that much - I do carry it around without thinking much about it. Highly highly recommendable product.
Edited by Havre - 8/4/14 at 1:45am