They're notebooks. I don't know where so much passion comes from, for some people but here goes. I've only used one of them because I bought them in advance for next year but I'm re-writing some notes because I think they'll be helpful. Anyway, the notebooks came in great shape, they're thin and lightweight. The paper is thinner than some of my better notebooks but it's paper so whatever. The spiral wire is pretty thin and I imagine if I were to have this in a backpack with other notebooks it would get bent out of shape rather quickly. None of these are problems if you just plan on carrying them or having them on your desk for planning or whatever else people do with notebooks.
The only thing a little irritating is that some of the pages are weirdly creased (pictured). Again not a big deal but it's a little irritating when you're writing and there's a crease.