Books, I usually just thumb through magazines in a doctor/dentist's office.
I like to get totally immersed in a story ... and it takes a good book to do that.
It depends, but, for reading in general, I usually want something long that will keep me busy. So, usually books.
Love books... Magazines are for brief stops.
I can't really read for pleasure anymore :'-(
Definitely books........I read magazines like a 5 year old. I just flip through and look at the pictures.