Pros - Easy UI, fantastic support, nice and solid, and a lot of storage
Cons - Sound very subtly lacks sparkle. It's very hard to quantify
The ubiquitous iPod. Now with slightly less audio quality.
I originally had a 30GB Color, and this took the most awesome fall from the top of one of the world's tallest roller coasters and into a lake beneath, so I used an interim and ancient Sony, and then bought this thing expecting an improvement. Not only did it cost more than the competition, it also sounded mediocre, like somebody in California had spent time and effort shaving every fraction of a penny off its design while still maintaining the superficial impression of quality.
The thing sounds like a late 80s to early 90s budget CD player; in fact it sounds identical to a Discman I bought off eBay for about $1. While you would think this is a good thing, and it sort of is, there are Discman from that era that cost $500 because they sparkle and breath life into the music, which is something that is just not happening here.
It's just a bit naff. Adding an amp helps with any headphone you use with it, but it's like airline food or instant coffee: no matter what it's never quite as good as it could be.
Pros - More better sound then my old Sony NWZ-E435
Cons - Little bit heavy.
I bought it online (second hand). I have the 80 GB model.
I really satisfied this product, because battery life is 10 days, about 1,5-2 hours use per day. The sound is really acceptable and clear, if the recording quality is cool. A little bit heavy and sometimes it doesn't fit in my pocket, but the big recompense this little nuisance.