i've just placed an order for the dark grey'ish one.
Dark grey? You mean black. I saw them in person today. One is black, the other is silver.
For some reason the voiceover is just saying Playlist One - Playlist Two - ....
You have to enable voiceover to hear the actual titles, otherwise all you hear is the generic titles like you've described.
I got a silver one today, aka dark whitish.

So far so good. Every time I get a new iPod, I swear it sounds better than the others, but I think that has more to do with me cranking up the music out of excitement. That said, the Shuffle has always been favored by the audiophile set. Who knows what DAC chip the 3G uses?
One gripe; mine came with a small but noticeable nick in the edge of the aluminum. And I actually rejected 2 others for more noticeable scratches seen through the plastic box. As ususal, the first ones show signs of being rushed out the factory door.
Also, the clip is kinda lame. A shiny fingerprint magnet, very thin and sharp, and the "gripper" inside the clip is sharp, meaning if you pull it off your shirt too quickly without opening the clip all the way, you could snag it and damage your shirt. The 2nd gen Shuffle was far more nicely made IMO, especially the clip.