Both are great shafts, in my opinion. The Pro Series is slightly stiffer in the butt section, softer in the mid section and the same as the Smoke in tip stiffness. This could possibly translate into a slightly higher trajectory in the Pro Series. The Smoke is considered a low trajectory shaft and the Pro Series is considered a mid to high trajectory shaft. That would be the main difference, other than the price.
Britt Lindsey