Pros: Lots of EQ, Sound Quality, Looks, Expandable Storage, Smooth Ui, Android (although you cant really root, still good for apps)
Cons: Stand is annoying, Album Art, No Playlists
The player sounds very good, BUT, if you don't use the EQ, it doesn't sound so great TBH. The EQ completely fixes the issue. The charging mechanism where you need to deal with the little hatch is fairly annoying, and I'm worried the hatch will fall off. But it does use MicroUSB charging, so it's very easy to find chargers. The UI takes a bit to get used to, but I love it, only complaint I have is that if you go from the playing song to the song selection tab, it moves your location to where the current song is. Very easy to navigate however, and music settings can be accessed right from the music player, without opening an external app. The album art only accepts JPG's, not PnG's, which is annoying but I can get over it.
To make playlists, I simply used MP3 tag to rename the files to the song title, and then I put them in folders on the Z2. Each folder is essentially a "playlist" in a way.
The integrated apps like Facebook and twitter are cool, and the player makes a fantastic alarm. Waking up to the "Swamp People" theme song makes me feel ready to just kick ass.
Overall, highly recomend the Z2