Maybe you seek out hardcovers, go the way of the trade paperbacks or maybe you like the smaller mass market paperbacks, or maybe you're all about the books on tape/cd?
What type of books do you like?
Or maybe like me, it depends on the kind of book or how much you really really want to buy it this very second? I'll love to hear what type of books YOU like!
When it comes to novels I prefer trade paperbacks, they are much easier to hold when reading (especially when laying down), also the corners of hardcovers poke me in the hands! Paperbacks are just easier to handle in my opinion, they stay open without too much effort. I've been known to buy hardcovers if i can't wait for a book to come out in paperback (I've been doing that a lot lately)! I do like having the option of someday swapping out my hardcovers for paperbacks. Libraries often have their books in hardcover which is sometimes a bummer...
I very rarely buy mass market paperbacks. I like to keep my books in good condition and the moment you open a mass market paperback it seems the spine cracks, they are also very hard to keep open since they are so small and thick.
When it comes to design books I prefer hardcover. These books I don't really "read" more lay them open on the table when I'm working so they have to stand the test of time a little better than novels and hardcovers provide just that. I handle my design books a lot more often then novels. Usually they only come out in a hardcover or paperback edition though, so no choice there, so I take what I can get.
I often buy a lot of very cheap used books from the library etc. and in those cases I'm not AS picky, I still stay away from the mass market paperbacks though!
I've always wanted to use books on tape more but haven't really found the opportunity.
Comment back with the types of books you like!