My original purchase of this lighter was four years ago. I purchased a second some time later as a back up to the first. I haven't cracked the box on the back up.No lighter lights everytime. No lighter strikes in all conditions. Wind, temperature, humidity, not to mention the lighter's state of cleanliness effect its lighting ability. Also consider the fuel quality (which eventually effects cleanliness), as well as the flame setting that effects both its efficiency and its ability to strike and or maintain a flame.I have carried this lighter everyday for four years. It is always in my pocket. Except for eating, sleeping and, well, the necessary use of facilities for the necessaries, I am outdoors. And I have used this lighter conservatively, more than dozen times a day, everyday, in every possible condition. Neither my Leatherman nor my Benchmade see as much use, and I use them everyday and carried them both for decades. I use this lighter primarily for cigars. I have dropped it, left it in the rain, and actually run over the thing with a truck, a tractor, a four wheeler and even lawnmower on one occasion. She's still a sparkin'. Plainly speaking, it has just been really good tool. And I appreciate it.As for the negative reviews I perused before writing this:Most appear to boil down to user error. As for the damaged fuel viewport , I cannot comment except to say that mine has withstood some rough treatment as stated.What I like about it:Well built. Solid with some heft. Feels good in your pocket. Feels better in your hand.Visible fuel port.Two burners - one for cigars is not enough. More than two is inefficient and not appropriate for a pocket lighter of this size. Too much refilling otherwise.Easy to purge, easy to fill.Reliable. Takes a couple few clicks to get her going once she's well broken in, but she always lights and does it well.Advice:Use only the best fuel and it will help maintain your lighter in working order. Occasionally up-end your fuel canister and blow out the exhaust\flame ports, especially if you get ash or dust or any other foreign gunk down in there.Adjust the flame to a middle size flame. The adjustment is made via the black ring around the fuel refill port. Too high on a fresh refueling and the flame will take a second or two to extinguish, as at least one video reviewer commented while at the same time lamenting that he could accidentally put the lighter back into his pocket while still aflame. Common sense ain't so common as to not be so highly valued, one might say. Though I do agree: don't put it in your pocket lit. That said, a flame setting too low will have difficulty staying lit. Most especially, as you get low on fuel toward the bottom of the tank when pressure is lower. Find a middle setting and stick with it.Lastly, always purge the lighter entirely between refills. Because I use mine so often, I run it empty every 5-6 days. For an average cigar man, the fuel tank will last you at least a couple weeks or more. For purging, up end your lighter and purge it from the refill port. Press the plunger and give her a shake a couple of times until you no longer hear it hissing. Then refill and give it a strike. Mine fires up every time.That's it. I write this review out of respect for something well made and thus reliable and also very affordable. I had no expectation whatsoever that it would last as it has. I appreciate it for doing so. Best of luck.