I go the calibre route as well, I have the cheapest basic kindle it is super light and very small I can even fit it in most pockets.

I really enjoy the curation of a bookstore so I usually end up side loading an epub of my physical purchases. I’ll typically switch back and forth I just finished “The Way of Kings” the hardcover was gigantic and unwieldy at times but the maps were so much better than the kindle version.

The Way of Kings: Working my way through the cosmere really enjoyed this was particularly long but I really enjoyed it fantastic world building.

What a shit show.