Plain black moleskine unlined notebook photo by shanoko
This notebook is, without a doubt, my all-time favorite notebook. I like using an unlined notebook because I like to draw & doodle as well as make notes, lists, etc.
The size of this notebook is just right. It's big enough that you can easily draw with it just in your lap, and it's small enough to fit in a backpack or most purses. The elastic band that keeps the cover shut is a huge convenience - it keeps your pages from getting crumpled and makes a dandy place to hold a pencil.
The finish of the cover has a nice look of quality to it - and it's very durable. My own moleskine notebook that you can see in the picture has been in use for over five years now, used very frequently and with plenty of travel, and it's still just about as good as new on the exterior.
I like the off-white pages. One of the big sells for me with Moleskines is that the paper has a very lovely, smooth texture that feels really nice to write on, especially with a mechanical pencil.
The back of the notebook also has a full-size pocket, which is not something I have used that much, but it's been useful on the small number of times when I did need to keep a check or a coupon in the notebook.