Hi, I am wanting to buy an ironman sprocket after reading all the good review on it. But the doubts is by using such a hard material, wont it just wear other component out (eg, chain). at the end of the day, we save money on not buying new sprocket that ofthen but ended up cahnging chain very often. that actually equals out the budget on the drive system. eventually something got to wear out first if one is harder than the other. in my opinion, there is no escape to this equation. any other thoughts, before i press the buy it now button. thanks.