Go 10.3 for focused monochrome work
Choose it for a lighter body, crisp 300ppi text and broad Android compatibility without a colour layer.
Note Air5 C for flexibility
This is the sensible default when colour, a front light, microSD storage and optional keyboard input all matter.
Note Max for genuinely large documents
The 13.3-inch display earns its weight for academic papers, plans and other A4 material.