Have heard the regular centurion a while back, and after three month searching a cable that could give the Traillii more depth in soundstage and treble extension I decided that the Centurion is probably the best cable on the market for that purpose. Though I wouldn't say the Centurion is a perfect "upgrade" cable since it definitely affects the overall tuning of the IEM, the Centurion still has one of the best Soundstage performance out of all cables I tested and the most sophisticated mid-high to treble tuning which I found suitable for my current setup.
Also thanks Andrew for having it delivered flawlessly. The moment I saw the two gigantic boxes I realize how difficult this actually is.
After reading discussion and reviews I thought the Effect Audio Centurion would be a better fit for me than the excellent PW Audio cable that comes with the Traillii IEM. Mids are a bit more forward and the presentation is more detailed and dynamic. Andrew at MusicTeck took extra steps to insure prompt delivery of the cable. I am a totally satisfied customer and will always check MusicTeck first for future audio needs.