in my opinion the best laptop could be an A4-sized Macbook Air. So you want a 13" Air. Go buy one. They're pretty good, I've been doing all my work on a succes

in my opinion the best laptop could be an A4-sized Macbook Air. So you want a 13" Air. Go buy one. They're pretty good, I've been doing all my work on a succession of them since like the second revision. 13" Air: 11.97 × 8.46". A4: 11.7 × 8.3". The actual screen is only slightly smaller than an A4 page.