Let's talk brooms. Wood or aluminum? They are both good choices. I attended the Canadian National tournament in 2008 and I would estimate that 20-30% of the players were using a shaved handled wood broom. One of the best players that I ever played against in our Duluth league used a Dgel Ultralight wood. The price point (under $20) brooms are made with a thicker and heavier wood shaft and are more durable than the shaved handled brooms.
This is a good time to talk about durability. The life expectancy of a broom is anywhere from 1 minute to 10 years. All it takes is one slash or one hit to a goal post to break or bend a broom shaft. This is why manufactures will not warranty brooms. This is also why I suggest brooms that are priced $50 or less. Brooms will break. They live a tough life.
Aluminum brooms vary in price from $26.99 to $109.99. As you go up in price, your strength will increase slightly and your weight will decrease slightly. Less weight means that you will have increased broom speed when it comes around and strikes the ball. This normally means that you will shoot the ball harder. Broom head speed is just one of the factors in a harder shot. Like anything else strength, mechanics, and practice are also very important.
Broom heads are all very similar. The Dgel BDG is the only plastic head. All of the other broom heads are what I would call rubber heads. The plastic head is very durable and great for recreational play. I do not recommend it at higher levels. For passing and catching passes, you want a rubber head that grabs the ball. I suggest only cutting one corner of the broom. That corner is the bottom of your broom. A lot of players will then bend the top over so that the head will grab the ball and allow for better wrist shots. Be careful with all broom heads in cold weather. All broom heads will harden in colder temperatures and may break if the broom head strikes the ice.
Finally, broom length is also important. The standard length for brooms is 46 inches. This is the proper length for 99% of broomball players. Sometimes a shorter player is more comfortable shortening the broom. We do sell some of the longer STX Gold Crown 52 inch brooms. The longer broom is nice for poke checking the ball away and does increase your reach, but I have never been able to shoot well with a longer broom.