The '04 Duallys have a very short valley and 65% letoff, which is not adjustable. I've had my '04 Patriot Dually for about 1 1/2 weeks and I love the feel of the smoother cam compaired to my '03 Pat Dually hunting set up. Some like me shoot very well with a very short valley and I believe it helps my accuracy. The Patriot VFT single is much more adjustable for draw length and letoff and only gives up about 12 fps to the Dually. Shoot both to get the feel of what you like best. For most shooters, I believe the Patriot VFT offers the best compromise