I'm a newbie at alcohol based markers and so far these have not disappointed! The chisel tip is sharp and clean and the colors are beautiful and super saturated. I would say that the quality for price is excellent.

It's a good feel to the stroke of the hand
It comes out clean
I recommend it

A very good set for the price. I am a hobby artist and a beginner. So I didn't want to spend too much on the high priced copic markers, but needed an equivalent of it. I do recommend this set for people like me. But beware that with less price, you would need to make some compromises (which I explain below), but definitely has room to fix it or have a work around (also mentioned below). I bought the 100 color set i.e., 99 colors + 1 colorless blender. Attaching pictures.
Pic 1, 2 & 3: It's the picture of the complete set. 99 colors + 1 colorless mixer. From top row - greens, blues, yellows, reds and the greys. The pens have a square barrel and hence it is easy to hold. The numbering on the caps are visible and indicates if it belongs to the set of greens (number starts with G), cool/warm/blue/green greys (CG/WG/BG/GG), reds (R) etc. Numbers are on the barrel and the caps on both ends. Numbers on a very few caps started to fade off.
Pic 4: Swatches. A very good range of colors. They match very well with the colors on the cap.
Pic 5: This is where I was a bit disappointed on. The case containing the pens is very thin, hence it doesn't hold up the weight of pens.
When the zipper is open and the top flap is flipped back, all the pens leans/falls over to the side making it difficult to see the color numbers on the cap (shape of the case is intact when the zipper is closed though). I fixed it by cutting a few pieces off of the Amazon cardboard box it was delivered in. I put one piece at the bottom and one piece each in the front and back. Now it holds everything up properly. That's the next picture.
Pic 6 & 7: With a bit reinforcement with cardboard pieces inside the pouch, all the pens stand upright.
Pic 8: The fine tip side is black and broad/chisel tip side is white. So, with the caps on, a white and black strip is visible indicating broad and fine tip sides respectively.
Pic 9: It shows how the color on the cap is visible from all sides.
Pic 10: No noticeable bleeding with micron pens. My white gel pen was pretty visible on the darker shades.
Pic 11: My attempt with marker coloring. When colors are added, it made definite streaks rather than blending with previous layer; I cud resolve it by giving another layer of the base color over the added color.

I thought I would use these and look at some instructional videos before I wrote back on these.
First of all, I had never used alcohol markers before, so this has been a learning experience. I am taking a cartooning class and needed some. They all were good on arrival, ready to swatch and play.
I like the color numbering--it is really helpful to know the color family from the number. I see 5 color groupings--gray, green, yellow, red, and blue (G,G, Y, R, B). Set aside the grays and make a color wheel with the greens between the yellows and the blues, and the red on the other side. Now line them up by the first number and it starts to make sense. Whatever that hundred number is, think of it as a color chip for wall paint, with the highest number at the end being the darkest color---B203 is light and B258 is really dark. I don't know what the middle number is. Anyway, that makes it easier to blend them.
There are some colors that are surprisingly darker than the caps. All the dark colors have lighter colors on the caps, and some browns pop up in both the red and yellow families much darker than you would think, so swatching is a really good idea--I may tape a color on the worst of these so I don't fall into that trap again. The cap colors are generally helpful , but you need to test before you use.
There are color names on the barrel on a little sticker. I had to use a magnifying glass to read them, but I am glad they are there. They seem to be industry standard colors and dead on match for some other brands that have color names. I am guessing you could replace or refill a color by going to Dick Blicks and getting individual Spectrum Noir ink or pens. If I stay with this hobby I might just go for a Copic if I wear one out.
The grays are interesting. There are 3 warm grays, 4 cool grays, 3 blue grays, and one green gray. I am still exploring how they can be used for shadows or blending to make new colors.
The ink flowed easily from these, and dried smoothly after learning to just add more ink to avoid stripes. For beginners--they do bleed through. You need something under your paper to protect whatever is under it or use marker paper. I have a lot of Mix Media notebooks; I have been using them and I have forgotten and had some accidents. You won't be able to use the reverse side of your illustration.
My only problem now is that I have gotten greedy and I want MORE, more colors, so I have bought some other brands. They were mostly more expensive, I still like these.
I think that these markers are a very good choice. 5 stars.

This product I received as a gift, and I love the variety of colors. I never feel the need to have to blend colors to make a specific color because theres just so much! This is a very high quality product and I use it all the time!