Advice on getting U3

[b0ng0]

I am so close to buying a U3 but before I part with the cash I was wondering if anyone has had any experience with the U3 and what their opinions on it are. Also, are there any equivalents to it in terms of size and storage space from other companies?
At the moment I just have a 20GB sony nw-a3000 but for short journeys and travelling to and from work and jogging it doesn't quite cut the mustard. Thanks for any advice.