Musichead, I have an XV-1s, TW 10.5 arm and a Raven AC. I my opinion, compared to the stock Millenium mat, the TW mat added a sense of ease and flow to the music, made the sound more musical without sacrificing detail, and added more bass impact. With the TW mat thickness, adjusting VTA and anti-skate was a must. All in all, I am very happy with the TW mat as an upgrade compared to the Millenium mat.