At a minimum, it’s likely that you need at least five different shafts, not including the putter. Driver, fairway wood, hybrid, irons and wedges.   You can make the argument that if you can carry 14 clubs, then each club should be optimized to do a specific job – and if that job requires a slightly different shaft than the club to either side, so be it.   The other way of thinking about this is that you need the number of shafts that allow each club to perform optimally for you.   This is one case where it’s not a terrible idea to look in the bags of tour players and competitive amateur golfers to get some baseline information. Typically, you’ll find 4-5 different makes/models, often separated by category – wedges, irons, fairway woods/hybrids and driver.   As always, a couple caveats to consider. Some golfers might use a different wedge shaft (DG Spinner, KBS Hi-Rev) to create more spin and higher launch in a specific club – often the highest lofted wedge. Additionally, iron shafts such as Dynamic Gold AMT feature different weights in each shaft to help alter launch conditions throughout the set.