I have read the reviews, but there is just too much information to retain in order to make an informed decision. Here is what is important:
**Play music/Store Music
**Speed (Enough to play music and access email at the same time wihtout bogging down)
**Space (Enough to store music, games and files)
**No rubber properties on the PDA
With the exception of good battery life, they all meet your criteria. The higher clock speeds Axim X50 (especially X50v) models don't have great battery life. But you can buy a spare battery or an extended battery to increase runtimes.