This is a hard Review to write and I've thought about it for a long time before writing it. I am not what you would consider a professional artist but I do color and draw and my skills are well above average. I have a variety of markers, colored pencils and gel pens that I use. I do not want to compare these to any other marker at this time. Here is what I want to say about these markers.
I loved the variety of colors that were included in this set. I found both ends to be the right sizes that you would expect to be on an alcohol marker. The markers that worked are definitely above average and would definitely be something that hobby adult colorists would want to use. I truly believe that some professionals would also want to use these.
Where I have trouble with giving these 4-5 stars is this: First the bag, there is absolutely no stability to this bag and when the bag is unzipped the markers fall out everywhere. The body of the marker itself is good size and is comfortable to hold in your hand especially on bigger areas that you're drawing. I do not like the cap on the end of the markers for two reasons, firstly inside the cap there is a plastic circular "tube" that the tip fits in. If you don't get the tips in perfectly they can be damaged. Secondly when you take the cap off of one end it does not fit on the other end so if you weren't careful you can lose the cap very easily. Other brands I've used I can take one end off and it fits on the other end so it's right there and I find that to be convenient. Also a couple of the markers that came, the tips were already damaged. It was on the broad end and they were kind of split in the middle. I also had 7 markers that were dried out.
The markers that worked I liked. I could get over the negatives I stated above because I liked the way the ink laid on paper and the way the markers felt in my hand. I would like to think that the set that I received to look at just was a fluke. I have used other materials from this company and found them to be great quality. If I could Overlook every one of the negatives I pointed out, the only suggestion I would have for the company if I could talk to them in terms of colors is there are so many Grey's that I don't even know if I will ever use half of them and I think that some of them would be better being shades of other colors.
My experience with these markers would not stop me from trying them again sometime. Even with the design things I did not like I still enjoyed using these markers.