I have around 70 Leupolds and have never had one fail.

I sent a couple of 1960's vintage Vari-X scopes back to be cleaned and recharged and I sent several in to have the reticles changed to the heavy duplex style before the price for a reticle change was no longer a good value. I don't care for the "tactical" look of the Feedom series, but that is aesthetics, not mechanics.