I've only listened on and off for about an hour, and it still sounds like the D/N is on. It seems to have an added boost of loudness compared with the Touch and the 808, maybe that's why it sounds powerful, hmm...
As far as soundstage is concerned, I'm come to the conclusion that it's definitely bigger than the 808 and almost on par with the Touch. But it has a lot more depth and that makes it sound quite different from my previous Sony daps. Going back and forth between the X1000 and A808 was interesting, because the 808 still sounds very good to me, so I wasn't expecting a dramatic difference, and I didn't hear a dramatic difference.
But there are differences! The X1000 midrange is more forward than the 808, and it's especially noticeable with vocals. Bass seems heavier (but controlled) and treble does seem sparklier. I think the biggest difference is in the warmth and power though, but I think once I get used to the sound signature, it will probably just sound normal

Enough about sound for now, and on to small annoyances.
On previous Walkmans, you used to get a message to say 'already on device' if you accidentally duplicated an album. Well, I just duplicated 5 albums, and they all transferred - in duplicate! You still can't delete tracks directly from the player, but you can delete
video directly (so why not tracks??) The stupid web browser sucks compared with Safari on the Touch, but I wasn't expecting much from it anyway, so I'm not disappointed.
It's horribly slow transferring music, I read 'War and Peace' twice while it synced 40 albums, and it crashed twice just after the message:
'Waiting: Walkman is busy' popped up. I decided to do the rest of my music in smaller loads. Thankfully, I don't have to do mass transfers very often.
That's all I know so far

Oh, the screen is so pretty. There should be a special 'heart' smiley for it.