I really like these markers. The brush tip works well and the thin tips are smooth and bright, perfect for writing and small details. My kids and I have enjoyed coloring a big giant poster with these and I have enjoyed using them for my planner and bullet journal. I do think these are a great alternative to the Tombow dual brush pens money wise. Tombow's quality is definitely worth the price for them but if you're looking for an alternative for personal use, I think these are a great choice. You get a great variety of wonderful colors in many shades for the fraction of the price. I do wish I had seen the 100 pack because I totally would have gotten those instead. As you can see I left room for the colors I don't have in hope to get the 100 pack at some point so that I have all the colors. Also, their customer service is amazing! So if you have any issues at all with your set, I recommend you just contact them directly. They're great!