The Nano will still reign supreme until Apple releases a successor simply because it's massively advertised and a lot of people tend go with the crowd. Most are tech-illiterate, and don't want to go through the hassle of converting stuff for the e200. AS for the YP-Z5, no one's going to know about it. The only difference between it and the nano is it's larger screen, so everyone's going to go for the "in" iPods.
These three mp3 players seem to be vying for the so very lucrative high capacity flash mp3 market. Each has its own strengths and weaknesses.
Who shall win the Struggle for the Market Share?

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