I'm looking into buying a contact mic for various sfx recording. I've noticed that the AKG c411 is a popular choice, but I see the frequency response only goes up to 18khz. Will this be a potential problem when pitch shifting? Is this normal for contact mics? What other options would you guys recommend looking at?

For an idea, I want to attach a contact mic to several golf club heads and record hits, so durability is one of my priorities.