Reusing iPod touch 3.1 to play music

• If you're using Windows, you're basically locked into using iTunes to manage your content; some people don't like iTunes.
• Syncing non-media content is weird, too. There isn't a unified sync system. I sync calendar via Google Calendar, notes via SimpleNote, and general files with Dropbox. Some apps only sync with your computer over WiFi, which is a hassle for me at work where the wireless network is not set to permit this. Sync is really important for the iPod Touch because it's nice to have a lot of your data at hand all the time, but it's a pain to type it in manually because it's so small.
• You can't easily update podcasts on the device. I couldn't sync for one week one time and had to update each episode by finding it in the iTunes store.
• It's really smooth, so if your hands are greasy it's easy to drop. Mine has handled drops well. I'm glad I use plastic screen protectors, though.

These are the most potent drawbacks I could come up with. I haven't found any comparable devices that solve these problems any better, though. Non-phone smart devices that fit in your pocket that aren't iPod Touches basically don't exist now; there are some Android devices in the works. I'm delighted by my iPod Touch and absolutely recommend the device.

I've experienced similar problems in the past and it tends to be fixed by force quitting the app, by double tapping the home button so the multi-tasking tray appears, holding down the app until the red 'x' appears and then tapping that before opening the app store again.