I was considering buying an mp3 player but lost interest after reading that the ipod I was thinking of buying puts a pause between tracks and there was nothing one could do about it. As I listen almost exclusively to classical music this was really off-putting.
Nothing!? It's good to know all the capabilities of a product under consideration before making a decision

"Many music CDs contain tracks that seamlessly transition from one song to the next. Importing these songs into iTunes may create annoying gaps between these tracks, and these gaps are carried over when you copy songs to your iPod.
How can you fix this? Follow these steps to use the iTunes Join CD Tracks feature to create gap-free tracks.
Insert the audio CD in your Mac
Notice that the songs on the CD are listed in the iTunes window
To remove the gap of silence that normally occurs between songs, select two or more songs and click on Advanced - Join CD Tracks to combine them into a single track
Click the Import button to add the songs to your library"
(taken from
https://macs.about.com/od/ipod/qt/gap_free_tracks.htm)
I have an iPod and an iPod Shuffle, and I couldn't be happier.
The main reason, however, was that I don't really enjoy those tiny little earplugs as headphones. I prefer moving my mp3s in CD or DVD or in those cool memory sticks form and play them from another computer or car audio player when I don't have access to my hi-fi system at home.
The choice of headphones is entirely yours, of course. On airplanes, or in any other noisy environment, I use my iPods with noise-cancelling headphones; the ear plugs are sufficient for many occasions as well (working out, for example).
But then again, I also use my iPods to transfer large amounts of data between computers, so they are not merely MP3 players for me. I am pretty much completely on Apple; my priority is that things must work and they must work properly. The Apple/iPod connection and whatever goes with it is the best I have seen in this arena.