OI use Crow harness only now, and have for the last ten or so years I have them rebuild and recertify them when they go out of date. I have two sets and send the older set in for fixing first.
They always come back with a tag that gives me from 3 to 4 months extra use
I do have several sets other brands but I won't use them due to Simpson saying they won't rebuild and recertify their own belts any more