Less over stable than the F1, the F2 is a medium speed, over stable fairway driver with very predictable and controllable flights perfect for executing the most demanding shots. It features Prodigy's "Easy Release Technology".
The 400G series is the regular 400 plastic with a shot of adrenaline. It is the base 400 plastic mixed with another resin that give the plastic a slightly different feel than the base 400 series. The additive also makes the disc more durable and requires more time to break it in.