I have always put off buying an Ipod, purely because of the lack of FM radio, which I do quite often use. So the addition of this in the latest generation is very welcome.
The Nano is slim, light and easy to use. The sound is great. I would recommend getting a better pair of headphones, as the ones in the box arent really that good.
I have also found that the volume is quite low, even with the volume limit set to maximum.
Battery life is good.
The only real gripes I have with Ipods is the search facility, is really is fiddly and also the fact there is no dedicated volume button, having it integrated into the click wheel is a real pain, you end up changing the volume by accident and when you do actually want to change the volume, you end up being in the wrong screen.
Overall am very pleased with my Nano.