I use KOReader on everything except e-ink devices.

Linux desktop. MacOS laptop. Android tablets. Android phones.

Where-ever I am, I can pick up a device and continue reading from where I left off. I have the same config everywhere (it would be nice to be able to distribute that) for gestures and taps. I use the same font everywhere (TeX Gyre Pagella, which is a Palatino clone.)

Customization begets comfort.