I play a lot with brushes. The etched head will not wear down, but they are reputed to be more resonant than the Evans coated head with a sound control ring underneath that I prefer. I like a dry, crisp sound, your preference may differ. One suggestion is to try different brushes. Wire brushes seam to wear the coating off faster than nylon brushes for example. I use Regal brushes but it might be worth trying different brands of brushes too.
Bill