Sue,
The size of the screen was important to me because of the vision problems I'm suffering from. Sjogren's affects the vision badly and with the medications it's even worse. I get by sometimes with just magnifying reading glasses, but most of the time I use a pair of bifocal progressive moisture chamber eyeglasses. (read goggles here!) So we chose the largest screen we could get in the laptop. A smaller screen of course makes the laptop lighterweight. The laptop still even with with the larger screen isn't all that heavy. And for any movement outside the house, you can use a case that is softside and has a shoulder strap that lets you sling it accross the body. But I find no problem carrying it around in the house. It's sort of like an extra appendage to me. One that works better than the other ones!

Hope this helps in trying to choose.

Billye