The 5, or AP5 model, is a model that has been popularized by Albert Pujols. This model is easy to control while swinging through the zone and is ideal for those experienced swinging wood.
Players swinging this model are typically hitting for power and willing to give up a tad of barrel diameter for more barrel length, balance and bat speed.
Maple is the most popular wood used to make bats. Maple is a very hard and dense wood which many say helps the ball jump off the barrel of the maple bat.
Maple bats are hard giving little to no flex and is usually preferred to advanced hitters looking to add pop and distance to their swing.
Yellow birch is often referred to as the perfect combination between Maple and Ash. Birch has solidness close to Maple but with some flexibility closer to ash. Yellow birch is the best for novice hitters who may mishit more than the advanced hitter.