I'm being using Staedtler's lumocolors for quite a time right now. Since I couldn't find lumocolors in amazon, I decided to try these BIC markers since they looked cheap and nice, but I was wrong. Compared to lumocolors they are pretty bad: they have a very intense odor of alcohol, and its ink is very light compared to lumocolors', lumocolors have a very solid and dark ink. As I said before they are very cheap, I don't know if I'm going to use these markers or not, but the next time I'm going to wait to find lumocolors.