Personally, I think it's the best portable 'anything' I've ever had and I've had MP3 players for donkey's years simply because I travelled for a living and wanted to carry a 'slice of home' with me.
I've also got many, many audiobooks and just about all my photos too. That said, I did buy the 32 Gb. The downside (and it's reasonable) is that when you start watching video/film, the battery takes a hammering.
All that said, I'm not too sure I'd swap if I were you - but much depends on what you envisage using it for.