I have an '03 and an '04 Patriot Dually and there is quite a difference in the bows by design. They both shoot very well with the advantage going to the '03 in my opinion. The '03 has less reflex in the riser and more brace height. I like the shelf extension on the '04 and the bearings in the '04 cams. Both of my bows shot the same speed at 29/70 pounds with the same 457 grain arrow through my chrono- 286 fps. The cams are not interchangable between the two bows. I like the new VibraBlocks and string silencers on the '04 bows but I do have LimbSavers on my '03 and it's more quiet at the shot. Both bows are great choices for hunting and 3D. The valley on the '03 is longer and easier for me to shoot .