Display stuff at a screen that's comfortable for prolonged reading/viewing.
My needs would be covered by two devices, a smartphone in the size of say the fith generation iPod Nano and a 10 inch tablet. So far the market has only deilvered the latter so that's what I have.
Politics: A strife of interests masquerading as a contest of principles. The conduct of public affairs for private advantage. -- Ambrose Bierce