Pros: Plays a variety of sounds and video, plus so much else
Cons: Video could last longer
The newly announced 4th generation has several promising updated features, including an improved display, more speed, and an even better OS. However, the 3G is so good that switching would take some serious thought.
If you listen to music on the go, the iPod Touch is the device of choice. Clear sound in a variety of EQs (including flat), a long-lasting performance, and a famously elegant interface makes this more appealing the more you use it. Podcasts are a bonus, whether audio or video, and the range of games available makes it flexible for entertainment. I tend to use it mostly to watch TV shows and movies, and it's easy to keep a range of programs for your taste; I also watch subtitled movies, and there's an app for that, too.
Video and gaming are the two areas where battery demands are most severe. I can watch three or so movies to the end before needing recharge, but a game like Real Racing saps the battery more quickly than one might like. I don't use the Touch too much fore wifi, but using the web also uses more power than you'd want. Reading a full web page on the Touch (or iPhone) is not convenient, but there are a few work-arounds - at least some of the time.
The Touch does so many things so well that it's no surprise that it's top-rated. Even the earbuds/microphone shows a real improvement in sound and performance. I use it from several minutes to hours every day, and syncing is effortless.
I've had this iPod Touch 64gb for three months now and love it. I load all my music as lossless ALAC, and average about 3 CD's per GB. The interface is so much better than the wheel, and I thought the wheel was pretty slick in its day. The sound is very clean. (I'm using Ety ER4's) I only gave the SQ 4 stars because 5 is reserved for the best of the best portable rigs. OTOH, the UI is as good as it gets so it gets a 5.Battery is ok, especially considering I run ALACs, but the Cowon D2+ reigns supreme there. It is pricey though, but it is just sooo usable in every way and just plain fun.
Pros: Looks good, lots of storage, many features, third party applications
Cons: No adjustable EQ, expensive
Very briefly, this is a very good product. It's very user friendly, being an Apple product. It also looks great, for the same reason. The battery lasts for a long time. You can have 45 hours of continuous playback with one charge of the battery. It retails for 300, being an Apple product.