What is the best tablet/laptop for Ubuntu + Android for development?

As the title asks, i'm looking for a tablet/laptop/ultrabook with the following configuration: 1. 8GB DDR3 minimum 2. Ability to dual boot between Android (AOSP preferbaly) and Ubuntu 3. Greater than 10.1 inches (with a decent resolution ofcourse, 1080s would be awesome) 4. 3G is not necessary but awesome if it has capability. 5. Touch screen (if its a tablet)

Main purpose of usage - Development - Android and Web Dev are main processes.

The recent news of the Italian company which released a tablet which supports Ubuntu, Android (and Win8 which i'm not interested in) spiked my curiosity as to whether there are any other such devices out there.