“Hardback, I don't have a Kindle or an iPad.”

— Terry Poole, hairdresser, Kansas City, Mo.

“Hardback, it's cheaper.”

— Tony Carpowich, unemployed, Houston

“I prefer to read them on hardback ... my eyes tend to hurt focusing on different resolutions on screens.”

— Sean Wilson, digital promotion liaison, Houston

“Hardback, because the others are too technical for me.”

— Jenna McCollum, high school senior, Wichita