OK. I picked up the NW-A847. Loaded it with the same music as my NW-X1060; it took about 50 minutes to load the 20GB I had on my laptop.
Navigation and any other things aside, sound quality is close but not the same as the X1060. To the untrained ear it may sound the same. There's slightly less better bass (really bad phrasing, but bear with me). A good example is the song "Hold On" by Yes (off of 90125). It has much more presence, impact, and clarity on the X. It's especially evident when Chris Squire goes down the octave to a really low note in the 13/14 second timeframe during the intro. Overall, I'd say the sound is a but more dull and slightly veiled compared to the X. The difference is audible, but nothing to get bent out of shape on.
This is only a limited comparison right now, but I think there's merit that the X and A share the same guts in some way, but have differences. I've had the X since it came out so I know how it sounds. I always have it set to the flat EQ settings. The highs are a bit better on the A847 - that's something a few reviews I've seen have pointed out.
Is the NW-A847 still good? You bet. Would I recommend it? Not even a question - absoutely.
As for the touchscreen vs. the non-touchscreen, it's an adjustment. The UI is definitely more snappy than the older NWZ-A829 I owned and was using for video, and the "coverflow"-like functionality is smoother than the X. If you never used the touchscreen, I doubt you'd miss it and the player is easy to navigate.
Sony didn't fix the scrolling text issue (i.e. if a title is longer than what is displayed, it doesn't scroll). That was working on the older Walkmans, and it's annoying they somehow took it out and never put it back in.
Just my initial reactions. If I don't wind up wanting the A847 and prefer the X1060 despite the lower capacity, I'll sell it here. I've already got a pile of stuff I need to get rid of, and it may join it ...