There is NO other device out there that fits in my shirt pocket, and:
1. Great music player
2. Great Book Reader
3. Good DUN with my phone of choice
3. 800x400 resolution or greater
4. Good browser
5. excellent ssh, vnc, rdesktop usage with keyboard

and, and, and

But those are my top uses in order of time spent; the last one being the most important to me.

For my teenage and older children, they prefer the netbooks, even at the same screen resolutions, or just better.

My daughter, and daughter-in-law love the portability and weight (about 2 pounds) and drop them in their purses and take them EVERYWHERE.

There are several great netbooks out there for about the same cost as an N810.

Good Luck!