I heard that Dean Markley strings were applauded for their constant quality. When I took these strings out of their package, i noticed that the coating was irregular and faulty. Nontheless, I installed the strings and they had an acceptable sound quality. The imperfections with the coating did not interfere playing at all.
Given the possibility of imperfections in coating, I would not recommend these strings. I do not know if these kind of defects are common, but this kind of first impression surely decreases my trust in the company. I have not had these kind of problems with other brands like Ernie Ball or Elixir.