I love these markers! They were very easy to learn to use, and there is a good color selection. The colors are bold and vibrant and the blendability and layering of the markers makes for a smooth coloring experience. I used cardstock at first, and then ordered the matching Ohuhu marker pad. If you are going to be coloring portraits, you may also need to look into the skin tone markers set, because this set does not have many colors that could be used for lighter skin tones. I also found the blues a bit harder to blend with each other than the other colors, because they were more varied.
That said, I think that the markers are all beautiful colors and I love the brush tips. The other end is a big chisel tip. I bought these for the brush tip, but did not realize that Ohuhu also makes markers that are a brush tip + fine tip combination instead of brush + chisel. So if you do not think you need the chisel tip (nice for faster coloring of bigger areas) and would like a fine tip (smaller details than even the brush tip) please look for the brush+fine markers instead! I'm very happy with this brand and the value for the money, and will definitely be investing in more colors in the future.
The markers come in a zip up case that they can stand up in, which is nice, and also included was a plastic sheet that you can put under your paper to prevent bleeding (if you are using thinner paper, or just for peace of mind!) It also comes with a fold up piece of paper labeled with the color names so that you can swatch out your colors. I recommend also doing your swatches on the type of paper you will be using, though!