Before we bought our first composite bat I read about them and read somewhere that they need 100's of hits to break in. So we did that on a T, but now thinking back we may have exhausted the amount of hits in it's life. It was a Louisville TPS Jessica Mendoza. This one and quite a nice price:
Amazon.com: Louisville Slugger TPS Mendoza FP86M (-11) Fastpitch Softball Bat: Sports & Outdoors
My DD tried the Synge this fall from one of the girl's that had 3 THREE nice composite bats--two CF4s and the Synge. Liked it immediately.
For an inexpensive bat, I highly recommend the Mendoza bat. It's -11 and has some really good pop once it's broken in. It doesn't quite compare to my DD's CF4 but, for the difference in price, it has really good performance. My DD uses the CF4 for games and practices where a live ball is used and uses her Mendoza for cold weather games and hitting off of the pitching machine. At the price for a new Mendoza, it can easily be replaced if broken. However, it has lasted her three years of high school, summer, and fall ball combined and only seems to be getting hotter. Both are 32". The CF4 is a -10 and the Mendoza is a '11. However, my DD feels the CF4 feels a tad lighter.
In an indoor practice last night, another girl on my DD's high school team used my DD's Mendoza instead of her Easton (I don't know the model but it is a hybrid design) and was hitting the ball harder than I've ever seen her hit.