I've been using the same set of Evans Blue Hydraulics on my drums for years, if not decades now. All the toms show some signs of wear but definitely no dents. And while I never really looked too closely, I never saw any evidence of wear of the bass drum batter head. A few weeks ago I carted my kit to someone's house to jam. While I was playing I noticed a buzz sound each time I hit the bass drum. I had never heard that sound before. I looked at the head, somewhat casually and didn't notice anything so chalked it up to bad technique on my part. Took the kit home and when I was setting it back up in my basement I look a little closer at the bass drum head and notice that the outer ply of the head had completely cracked and that the sound I was hearing was the two plies vibrating against one another. So much for indestructible. I'm not complaining at all given I probably bought those heads back around 1979 or 1980. I'd say I got my money's worth, and then some. I've been thinking of changing them out with Remo Pinstripes and now have no reason to put that decision off. I do plan on getting some sort of protector for the spot on the bass drum where the beater hits the head. This is nothing more than a realization that Evans Hydraulics are not indestrucible.