An iron set is a collection of golf clubs designed for various distances and shot types on the golf course. Typically, an iron set includes a range of numbered irons (e.g., 3-9), a pitching wedge (PW), and possibly additional wedges such as a gap wedge (GW) or sand wedge (SW).

The lifespan of an iron set varies depending on factors such as frequency of use, maintenance, and quality of materials. With proper care, including regular cleaning and avoiding excessive wear and tear, iron sets can last anywhere from 5 to 10 years or even longer for some players.

The price of an iron set often reflects the materials used, design features, and technology incorporated into the clubs. While more expensive iron sets may offer advanced features and higher-quality materials, the "better" set ultimately depends on your skill level, preferences, and how well the clubs suit your game.

The flex of your golf clubs is an important factor in your swing performance. The flex refers to the stiffness of the shaft, which affects the trajectory, distance, and accuracy of your shots. The appropriate flex depends on your swing speed and tempo. Here are some general guidelines:1. Extra Stiff (X): Suitable for golfers with very fast swing speeds (over 110 mph) and aggressive tempo.2. Stiff (S): Suitable for golfers with fast swing speeds (100-110 mph) and a smooth tempo.3. Regular (R): Suitable for golfers with average swing speeds (90-100 mph) and a moderate tempo.4. Senior (A): Suitable for golfers with slower swing speeds (under 90 mph) and a relaxed tempo.

The choice between forged and cast irons depends on personal preference, skill level, and desired feel. Forged irons are crafted from a single piece of metal and offer a softer feel and more precise feedback, making them popular among skilled players seeking control and workability. Cast irons are made by pouring molten metal into molds and often provide greater forgiveness and distance, making them suitable for a wider range of players, especially beginners and high handicappers.