Are you sure the AK4490 sounds as good as the AK4396? And as usual, implementation is key. Anyway, I'm looking forward to the x10 impressions. And because I'm in no hurry, I'll read all the usual bitchin about it and "where's rockbox" and once that's released for it, then I might bite! And you're liking the LG v10? I have an S5 paired up with the ZuperDAC and am loving it as my main player. But I still like having the X3 (and re-found Xuelin 770) as happily used backups.