The 12.9 is heavy and unwieldy, it really is only usable in a tabletop setting, so you might as well just use a laptop and have 100x the functionality
I have a stand that I can tilt and maneuver in any direction I want. I can use it in bed, on the sofa or chair, or whatever.
https://www.amazon.com/gp/product/B00V7NYPQO/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1
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