"I don't think you could do much work on a 13" screen anyways. "

I used a 12" Toshiba portege laptop as my development machine for some time, and the 1920x1200 res rocked. So much so that ever since then I made a point of getting 1920x1200 on each new laptop.

This was one reason I skipped on getting a macbook. Poor rez options, and no trackpoint mouse.