Chromebooks are great!
Brought a Chromebook four years ago as a £200 "throwaway" experiment - over those 4 years I've hardly ever needed a windows laptop when out and about.
Now, just replaced it with a new HD Chromebook - and it supports Android Apps as well - so now Office 365 and Skype as well as Gmail and G-Calendar.
Add to that the "use for a whole day" without need to lug a power supply, and the "instant start".
I think I can finally retire the ageing backup windows laptop.