On both Prima Donna it was. I didn’t get to post my impressions, but I really enjoyed the Prima Donna on both versions. Very soft/ergonomic, it paired well with the IEMs I had at te time and made me love a pair of IEMs that I didn’t enjoyed as much, because of its lack of bass extension and bright highs. It smoothed them out, the extension grew on both ends and the soundstage grew exponentially, everything was more revealing (something I always had my doubts when I read people’s impressions on cables). I was sad to find out the price though. As for the other cables, I only tried the copper one (I believe it was the Thor) and didn’t notice much difference vs stock cables and hated the ergonomics (very important to me). The ear hooks were very strange and when I noticed the other cables were the same or worst with ergonomics, I didn’t bother to try them. If the Prima Donnas were more accesible, everyone on head-fi would be talking about them. But in my case, when I consider the price, which is higher than many TOTL IEMs, the need to buy it just wasn’t there.