If it was me, for travelling I'd be for a 78$, second-hand Kobo Aura HD, I'd liked its sturdiness, and form factor. It has a SD Card, a nice screen and I recall the "zForce Touchscreen" was fine. Wasn't that infrared tecnology iirc?
I see Amazon has a very similar " Neo 2 eReader, 6" E Ink Carta 1300, 300 PPI, Octa-Core, Glare-Free" (similar in form factor), but don't know about. You may try to check some reviews.
Personally I still will be for a second hand and a battery replacement guide:
https://www.ifixit.com/Answers/View/...arting+to+fail
I mean, the Aura HD was fantastic.
https://en.wikipedia.org/wiki/Kobo_Aura_HD