UK or USA (I could ask a friend to bring me one easily).
Size: I need a workable keyboard, that's all. As mentioned in description, there are 2 requirements: battery life and weight. In practice, I feel comfortable enough with 11'.
I don't like Macs for many reasons, one of which is I can't change its battery.
http://shop.lenovo.com/SEUILibrary/controller/e/web/LenovoPo...
Plus bigger pack: http://shop.lenovo.com/SEUILibrary/controller/e/web/LenovoPo...
With 6 cells you get somewhere around 7-8 hours if you are lucky. I know this laptop, but looking for better options.
You don't need the 9 cell as well as the plate - it was just a suggestion if you needed more.
HP Pavilion DM1 - http://www.amazon.com/mn/search/?_encoding=UTF8&tag=pret...
Samsung Series 9 - http://www.amazon.com/gp/product/B004NF0LGG/ref=as_li_ss_tl?...
Acer Aspire Timeline X - http://www.amazon.com/gp/product/B0042X8W0Q/ref=as_li_ss_tl?...
You could also look at Ultrabooks (similar to the Air), but they'll have the same problem of changing batteries.
They are user serviceable on the macs, just not externally so. It's not like the iPhone.