With laptops, I find lugging around, finding space for and plugging/unplugging a mouse to be a huge hassle. A wacom would be even worse. Also you can write with one hand which is infinitely better than typing with one hand. When doing research that's a big
I'd say get one of those tablet EEE PC's. They're under $1K, have USB and bluetooth, and run full Windows 7. I have no idea how accurate they are though.
I have one of the Eee PC Tablets with Windows 7 -- it's a bit underpowered.
Fine for casual use, but I don't think it would be able to keep up with frenetic note-taking in a lecture.