may not be even close to the truth, but IMO the vectrix is the upgraded Trykon for the same price. My bow shop agreed when i asked if they basically took the 06 trykon, gave it better axles, gave it an sts, and changed the colors. the cams made it alot smoother pull and a touch faster, and the sts really helped with the noise. well the colors are irrelevant but look cool[8D].