it depends what you're looking for in an iPod. I personally use the
80 GB Black iPod Classic. That can play music&videos, display photos, and has many other cool features. If you're looking to use the internet you might want to check out the 8GB-32GB iPod Touch, that has a touchscreen, many useful applications, a constantly expanding app store, and internet(if you have a wifi router).
www.apple.com might be of help to you.