Lightweight Laptop Backpack Does Anyone Have Suggestions For An Durable, Lightweight Laptop?

Does anyone have suggestions for an durable, lightweight laptop? - lightweight laptop backpack

I am going abroad to study in England next year and need a lightweight, durable laptop to take with me on field studies, but also fast enough for movies and surfing the typical bedroom.

Settings:
Environment
(No PC, suggestions MacBook)
WiFi capabilities
Long battery life
Max Price: $ 1500

Thank you in advance.
Mobile-specific (link please) would be very useful!