Bests & Worsts Reviews from Amazon

I was very pleased that these markers arrived in a nice sturdy case, that they were well-designed and that there really were 120 colors. I understand why they have such a high rating. However, when I started to use them in my heavy-stock paper adult coloring book, they did not perform well at all. They turned the paper into pulp. It was very disappointing and odd, because I've used sharpy permanent markers in this book, and they did not even bleed, much less tear up the paper. Returning for a refund. Update: I am very wary of these products either given to or deeply discounted to certain people for their honest review. This is an unsettling trend throughout Amazon, and I think it is a slippery slope for fair and balanced reviews to count on.