What are the best netbooks you would recommend?

What I need:
- portable device supplementing a workhorse desktop
- mainly work with cloud computing
- connect to a multimedia projector
- easy syncing with desktop
- USB extensions to add-on devices
- ubuntu/Linux
- mostly used for presentations, and brainstorming
- available easily in the Indian market
- thin, light and cheap!

P.S.- do any come with mobile data capabilities such as 3G?

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