I'm gonna go back to my mini 9, which I still love. If you hate the SOUND of computers, this is the netbook for you: totally passive cooling, and the build quality is great. Plus, the RAM and SSD are super easy to upgrade (litterally less than 30 sec. for both).
They've discontinued this in the mini category but it's available with a newer chipset as the Vostro A90. I highly recommend it. It's been virtually my only computer for almost the last six months. I'm getting a 13" macbook pro to go with it for exams and bigger writing/research projects, but for notes and such it's really all I need.
For everyone thinking about going this route: you will get used to the screen. You do stuff like closing unused toolbars, autohiding the taskbar, etc. but there is plenty of screen. It does take getting used to, but you can definitely get used to it. And you'll be grateful that you don't have to look around that massive screen to see the professor, I love that I can sit across from someone in a coffee shop with my netbook in front of me, and it doesn't get in the way, ever.
That being said, the keyboard is rough. I'm more than used to it, totally touch typing, very low error rate, and it really only took a few days to get used to, but it has ruined me for other keyboards, and you get finger strain, and wrist strain WAY faster than with a larger keyboard. Good enough for note taking, yes, but for long papers or exams, no. Other netbooks definitely have better keyboards, as do the dell mini 10 and 12, But I don't think it's bad enough to make me choose a different netbook, they're all not so great, and eventually you'll get used to all of them.
Did I mention it's considered the most hackintoshable netbook?