From author Gail Carriger:
Talk to me about trade paperbacks: why do people prefer them over mass market paperbacks? Why do you?
First, let me quickly explain that in the US trade-sized paperback books, formerly called quality paperbacks (TR/TP/QP/QPB), are the ones that are slightly smaller than the hardcover (HC/CL) or roughly half-way between the UK’s B format and C formats. These days young adult books, for example, are often brought out in HC first and then TR. I can’t be precise with the measurements because it has come over all non-standard.
Mass markets are those little ones, also called pocket sized (MM/PB/PPB) which in the UK would be A format (although A is slightly larger than the US’s MM for metric reasons). In the US these are 6 3/4 by 4 1/8 inches.
. . . .
[R]ecently rumor has it the market is shifting in preference (in the US) from MM to TR. This may have to do with publishers, or it may have to do with self publishing, or it may be that the MM readers are moving to ebooks.
. . . .
Trade paperback books (or B format) …
- are less awkward to hold one-handed
- sometimes (not always) have larger print and are easier to read
- will stay open better
- have lighter paper with a nicer feeling texture
- don’t smell funny
- have a nicer weight and size
- are perceived as higher quality
- have spines that don’t crack as easily
- better capable of handling thicker books comfortably (although one reader said the thicker the better in MM)
- have cleaner lines
- are more elegant
- hold up better after multiple reads
- fit better in larger hands
- are comfortable to read, yet still feel special
- look better and more book-like on the shelf
- have bigger/nicer art work on the cover
Link to the rest at Gail Carriger and thanks to Lynn for the tip.