I was hesitant to use Prisma Color Double Ended Markers both because of price and because unlike Copic or Spectrum the nips are not replaceable, there is no brush side, and they are pricey but not refillable. However, they are smoother than both Copic & Spectrum, and they layer beautifully. I suggest having a few of these in your collection. They are not very economic. You have to replace them, and a lot of plastic and things go to waste. They're as expensive as the other high end markers, but without those features that can make them last forever. Very few of us have money for that. However, I am pleased with my experience with these so far and would definitely recommend them to beginners and artists who are working on a project that is special to them. The other downside to these markers is they are not India Ink Pigment, which we all know is the best archival out there.