There are basically four types of slow-pitch softball bats available out there:
- Single wall aluminum
- Double wall aluminum
- Composite
- Wood
Before you even consider what type of bat to buy, check with the league in which you intend to play--some leagues dictate the bat types that must be used. Most leagues I'm familiar with allow any ASA-approved bat, but some allow only single wall bats (Berkeley, CA for instance). Still others have gone to a more pure form of the game by allowing only wood bats (I've heard this is quite fun due to the increased action in the infield). Finally, check with the league for a list of banned bats. Make sure you consult the list before purchasing a bat, as the umpires will check each bat prior to the game.
A lot of physics and materials science has gone into bat construction, and I think it's safe to say that the composite bats are the clear winner in terms of the state-of-the-art technology and pop off the bat. This is confirmed by Daniel A. Russell at Kettering University. If you want to get deep into the science of bat construction and the physics involved in hitting, check out his fantastic article here.
The bummer about composite bats is that they're expensive. I bought a Miken Freak 98 from softballbats.com for $189, and I think that's about as cheap as it's gonna get for a quality composite bat that's ASA-approved.
Of course there are even better bats for even more money like the DeMarini Juggernaut. At $299, this one is guaranteed to elicit strong feelings from your wife.
Singlewall aluminum slow pitch softball bats like the DeMarini Ultimate Weapon are good bats (and a *lot* cheaper at around $80) but their construction affords a smaller sweet spot than other bat types (excluding wood) and less of a trampoline effect off the barrel.I actually bought an Ultimate Weapon based on some online reviews, but I just couldn't generate the velocity I needed with that bat. I also didn't like the balance very much. with composite bats, the balance can be dialed in perfectly; not so in single wall aluminum bats.
To be perfectly honest, I haven't owned a double wall aluminum bat yet. From what I have seen in the league I play in, the best hitters use composite bats without fail, so why go for a double wall? That being said, if your league has banned all composite bats, double wall bats will be your next best alternative. According to the aforementioned article, the best double wall bats can generate a ball speed of 96-100 MPH, so there's certainly nothing wrong with them. In fact, like composite bats, double wall bats will get better over time as the metal becomes more elastic , providing a better trampoline effect off the sweet spot. From what I have read online, the DeMarini 375 bats are good, and the $200 price tag would suggest it has to be decent.
The last basic bat type out there is the wood bat. I have yet to have the pleasure of playing in a wood bat only league, but from what I have heard, it's a lot of fun. If you have a chance to play in such a league, you're in luck because your bat is going to cost you less than $30. Again, I have even less knowledge about the wood bat category than doublewall aluminum, but I would imagine there is not too much difference between maple and ash. Here is an example from Louisville Slugger:
If you do want/need to use a wood bat, the only other alternative I'm aware of is bamboo. A company called D-Bat has a bat that is alleged to be better than maple or ash. At $60, it better be good! I suppose this would be the choice of the sustainability softball set, as bamboo is a rapidly renewable resource :-)
In summary, there are a lot of great bats out there at a wide variety of price points. Go with what feels good, but spend whatever you can the first time to avoid costly mistakes. And remember, you don't need to own your own bat. I know plenty of good players who swing better than me with somebody else's bat week after week! Have fun, and also remember to clear that $300 Juggernaut purchase with the wife ;-)
Next time: batting gloves and softball clothing...