I've been using the X7, with no issues, for months. Let me preface this by saying I may not be the best person to judge since most of the current issues do not apply to the way I use the DAP.
For me
Plays perfectly, I have no issues with scanning, (I just popped my SD card I was using with my DX80 and had a few minor problems in the beginning, about a year ago, which have been resolved) sound is brilliant, battery is adequate.
I only use the stock player and with the exception of updates I rarely leave pure music mode. I don't play video, try to store music from streaming services, need to attach it to a server or use bluetooth.
So based on my needs it's a wonderful player but again, my needs are limited by me. I bought it to play high quality music and it has not disappointed me.