I have a Pipemaster since the late 80s and an Old Boy since 15 years. The Pipemaster was twice in Service, once for a leak in the flame adjustment and once for a stuck Piezo. The Old Boy was twice serviced as well, once for leaking due to the spring on the top not keeping it closed and once for an optical overhaul, because the briar cover was scratched and dinged. So the second could have been avoided with better care, or a restoration, but I neither have the tools, not the expertise for that. The service guy changed the spark wheel as well, as it was still working fine, but worn, and could have given up anytime. He warned me to not use hard flints, which wear down the wheel, and recommended im Corona or Zippo flints.
Both lighters work very well and have survived many other, cheaper lighters, which I got as presents, or bought for being out and about, where I wouldn't take an expensive lighter. I once had a Dupont, but is was stolen one week, after I got it as present, so I can't compare to them.