I have an XD Tactical .45 that's 4 years old, over 10,000 rounds thru it, never even cleaned the striker channel or lubed it, never had ONE light strike. I've run mostly my reloads thru it, but once in a while a box of WWB or Lawman or Atlanta Arms reloads.
Oh, and it has a 16# recoil spring, solid guide rod, trigger job, extended mag release.