I’ve had two of the IOR 3.5-18x50 FFP scopes. I never had any issues with either, and I never had to send them in for anything, so I can’t tell you about their CS/lack there of. Yes, they tracked, and the glass was very nice in them, I liked the push button digital illumination, mp8 reticle was nice and clean with the center dot, but they were chunky fuckers, I didn’t care for the turrets, and to me the zero stop was a pain in the ass. Like others have said, if you really want to try one out, you might get a good one, but you might not. I was lucky that both of mine performed well. I would never pay their new prices for one, and occasionally you can find them in the PX for pretty cheap. Now a days, if I had Recon $$ to spend on glass, I would NOT get an IOR. S&B, Minox ZP5, Khales, or Vortex would be at the top of my list. Hell, I replaced my last IOR with an Athlon Cronus BTR, and have zero regrets with that decision! Anyways, good luck whichever way you go.