I've tried a few different styles of notebooks from the Northbooks brand, and was stoked to try these ones out. Personally I love the look of the exposed spine notebooks, and the lay flat aspect is a bonus. I primarily write with fountain pens, but do use some gel ink pens too. I've had mixed results with Northbooks' claim that "Fountain pen lovers: our paper resists feathering, ghosting, and bleed through." With every notebook I receive I dedicate one page to testing my inks. Most I use are shimmers, but I do keep one pen inked with black for note taking. I included pictures of the front and back side of the page I used, as well as a size comparison to one of my pens.The product description says there are page numbers, but please note on the blank style that is not the case. I could take or leave page numbers, but I'm glad they left the blank style pages completely blank in case you're using these as sketchbooks.There is ghosting, or show-through with all the inks I tried, even the Pilot Juice Up gel pen I used. I don't mind the show-through I got, but it might bother some who like a fresh page look on the back. The only bleed through I had happened was with my wettest ink, which is also the only ink that had any feathering (the Colorverse Hayabusa), and the Pilot Precise gel pen. The other inks I tried I was happy to see did fine, no feathering even on some of my broad tipped nibs and inks. I look forward to trying more ink and nib combinations with these.I bought the pack of 3 and found the sale price point incredibly reasonable for the quality I was getting. Even at the higher list price I'd still see these as doable. They're right up my alley for aesthetics. I like the simple, smooth covers these notebooks have. It even looks a bit professional with the all-black cover with only the silver embossed logo. You can decorate them with stickers or gel pens, or leave them as is. Be aware that these will be the kind of covers that will show dents and dings, scratches and water spots without a cover.If you don't need your fountain pen paper to be Tomoe River quality, then Northbooks might be a contender for a simple, easy to use notebook to keep with you. I'm happy to read that this company takes suggestions from it's customers and hope that trend continues as they develop new products.