The battery life is wonderful. It'll go 24 hours, which is more than what I need. It takes about 4 hours to fully charge. As far as interface and ease of use goes, I preferred my old Motorola m500. The design is this:
Back----||----NextSong
Menu---||----Play/Pause
Random--||---PreviousSong
With the || as the scrolling device. The less sensitivity, the easier it is to use BY FAR. I still have some trouble with it on low, but I've also only had the thing for a few days. I'll probably like it the more I use it, but for now I like my Motorola more, which just had a stick.
I was most impressed with the price and the hard drive size (20 GB for $200 is a fantastic deal). I got mine tax-free from
www.newegg.com.