This image is taken from my cell phone which doesn't have the best camera, but my PW from my new Mizuno MX300 iron set is already damaged! This is after only the 3rd or 4th time using the clubs. The damage occurred at teh driving range at Whirlwind, so it's not like I was hitting from the rocky desert or anything. Because these clubs are chrome plated, the notch actually penetrated the chrome plating and will rust if I don't get this taken care of.
My Ping clubs got some dings and notches over time, but the club head was one solid material so it never rusted, it was more of a blemish but didn't affect the performance or the integrity of the club.