Okay, I was not sure what I would be getting with these markers, but I'm very glad I took a chance. I saw some reviews that had bad experiences with these, but with a couple of caveats, I am probably going to be recommending them in the future - especially to parents of budding artists who are leery of Copic and Prismacolor price tags!
The main complaint I saw was that these pens feather and spread more than other alcohol-based art markers, and in my comparisons on normal paper, that's true. But these markers were shockingly more vibrant and rich in color than the other pens in my collection (from a myriad of companies, but mostly copics). Learning to anticipate and control the spread and feather of the ink is part of using these kind of markers, so I don't see that as a downfall - but if you mean to use these to color on regular computer or sketch paper, or fill in coloring books, it might be a difficult learning curve.
To those who said the colors don't match the caps: you're right. But neither do any of my other markers, to be honest. You end up making a page of swatches anyway. Having dealt with Chinese makers before, I swear their perception of color is different than ours - not better or worse, just culturally different.
As far as the one reviewer I read, who had loose caps and a disaster... Well, I may have been lucky, or maybe their packing has improved. I didn't have any loose caps or dry pens, though one of them clearly leaked at some point (the highlighter yellow!), but it was closed when it arrived.
Anyway, that was a long rambly review, but the bottom line is that I would recommend these to anyone looking to fill out an art marker collection without going bankrupt.