laptop screen size?

<p>I have a 13", and two 20" externals in the office. Works for me, and I like the light weight. The conversation here is making me think the 13" and external would be a good way to go. </p>

<p>Funny that the school says desktop is an OK choice as well. Parallel question. How about an iPad for classroom notes, and cheap desktop for dorm? Does iPad have a keyboard of sorts? To much mixing technologies?</p>