I was a bit wary before buying these strings for my main six string bass. After a week or so, they are proving very good strings ? very responsive and spanky.
It is true that they are a bit rougher than, say, their D'Addario or Elixir counterparts, but it's hardly unmanageable and it seems to me that they are very nice on the skin.
Further, I should also point out that I really like a slightly thinner C string, which these string have. I have always had the impression that a 0.25 C can play very well in some contexts, and I am finding it quite nice. All the same, I reckon not everybody might share my preferences.
In any event, these are very good strings at a very reasonable price. As usual, Thomann's service has been absolutely flawless.