The F3 is a stable fairway driver for long, controllable flights with a mild finish. It is a great disc for all skill levels. 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.