[wsh]

I have the now-discontinued Sony DPT-RP1, which I use with Jan-Gerd Tenberge’s software (https://github.com/janten/dpt-rp1-py). It works well for reading PDF documents without the need for frequent zooming or scaling.

If I had to replace it today, I’d buy a Fujitsu Quaderno A4 (FMVDP41), which I understand has a design very similar to that of the Sony product.