Mitsubishi Rayon Fubuki AXIn the last decade, shafts have become as important to the performance of a golf club as tires are to a race car. Lightweight materials, different profiles, and adjustability have golfers looking at shafts as a way to increase distance and accuracy. If the shafts in your irons and woods don't fit your swing's DNA, then your game is going to hit a wall.
One thing that's also changed over the past decade is the number of shaft options available to the consumer. There are as many different shaft brands now as there are equipment manufacturers. To get a handle on them all check out this list.