Perfect Binding.
Here is a prototype book of my own utilizing a perfect bind method. The easiest way to describe this is a number of single sheets or leafs that are glued together down the spine to form the text block/ image block (much like a magazine) Unlike a leaflet, this bind allows you to incorporate different paper types very easily.
A downside to this bind is that the pages do not lay flat. this may or may not be a problem, however, if you want to incorporate double page spreads it may be distracting.
The finished result looks very clean and professional.