It seems a natural progression that when you start Bullet Journaling, you eventually want to move on to more quality notebooks, especially the ones that have the dot grid format. The two most popular notebooks currently on the market are the Leuchtturm 1917 and the Rhodia Webnotebook. Both are priced between $15-20 on most online stores.
Recently Michael’s has come out with its own store brand called The Artist Loft.
Here’s a video review conducted by Jessica Chung of Pretty Prints and Paper.