I use a fair different number types of notebooks depending on the depending on.

I have spiral top ones for notes of me thinking/remembering/wanting to reenforce for later type notepad with a constant pen that go lots of places with me. And graph paper-y notepads/notebooks to help me work on my penmanship and handwriting my thoughts. And rough papered oversized ones that I like to doodle on with sloppy pens.

I think cheap ones can be great. But cheap doesn't need to be everything.