I've had a quick look through the previous threads on this topic but couldn't quite find what I was after. It looks like our department is moving towards the hole-punched a4+ exercise books. I was wondering where everyone gets their exercise books from. Currently we use orange for chem, green for bio and purple for physics. Having difficulty finding orange books from the usual suppliers (YPO, ESPO etc.) so any weird and wonderful suppliers welcome. People who use the hole-punched system does it decrease the number of books and glue sticks you go through significantly? Trying to judge how much to order.