I plan to work with some building projects as a helper. However, they required to bring a hard hat.

Personally, I want the best of the best or the BEST bang for your buck when it comes to all assests from whistles to cell phones to TV systems to firestarters. So needless to say, I'll ask the same for hard-hats.

Is a hard-hat just a hard hat? Or should I be looking for something specific? In this area, I have absolutely no expertice.