mberan, I looked at your thread, but the issue is that your budget is a fair bit over mine, and as such, not all the suggestions are really applicable.
Anyhow, I'm looking for something with a fairly good battery life, enough that I'd be able to use it in class when need be and not have to worry about it dying on me in the middle of note taking. A larger screen is nice, but hardly a neccesity, I am more worried about something that will run reliably and well. Hard drive space is not a big need, as I'll be investing in an external hard drive as well, more than likely. As far as running programs on it, the main uses will be surfing the internet, word processing, and music. I don't plan on using it much for gaming, and if I did it would be for older games, not just released new ones.