Typically, golf clubs for sale with steel shafts cost less and last longer. Within a set, they have more consistency but it takes more power to swing Taylormade golf clubs than it does to swing a graphite club. Stronger players with a mid to low-handicap may prefer the added control that comes with using a steel shafted club.
To determine the amount of flex you need in your club, you need to know how fast your swing with ping golf clubs is. The more powerful and swift your swing with callaway golf clubs, the more flexible of a shaft you need. Some golf clubs are now manufactured with what they call a uniflex shaft. This will fit any player's speed and power.