The words and notes are very clearly printed and the score is accurate and complete. The quality of the book is great. I'm in the show currently, so it has been flattened, folded, thrown around, highlighted, scribbled in, and everything else a show entails for the past month and the book is still in great working condition. It feels very solid, so I'm not worried about this changing in the near future. The binding is still holding strong, so it still looks great on the shelf too!
On the front cover it says something about a "lay flat binding" (I don't have my score in front of me, so I don't remember the exact wording). I don't know what this is, but it seems like a normal paperback score to me. It doesn't really lay flat any easier than other scores I have, but I wasn't expecting it to, so this isn't a negative for me.