Yes, depending on the model. The Max-style heads offer the most help on mishits, while lower-spin versions are less about maximum forgiveness and more about control for better ball strikers.
Yes. Callaway is one of the best-known golf equipment brands and has a strong reputation for drivers, fairway woods, hybrids and long-game clubs.
Yes, if the loft, shaft, flex and condition suit the player. The Callaway B21 can offer good value on the used market, especially for golfers who want Callaway driver performance without buying the newest model.
Driver technology usually remains competitive for several years. A well-kept Callaway B21 driver should remain a strong option for a long time if the loft, shaft, model and condition suit the player.
The main improvement is draw-biased weighting, high launch design and Flash Face SS21-style speed support. Golfers coming from older Callaway drivers may see better speed, launch, forgiveness or adjustability, but the biggest benefit comes from choosing the Callaway B21 head that matches the flight and forgiveness they need.