Been through a number of lighters and they all have their pros and cons, but I think that the 5x Vector fuel helps.
Here's how I see it.
Best lighter for the price, Ronson Jet Lite. The only downside is that it you can't see the fuel level. I wish they were easier to find, but I have two of them and they work great.
Best lighter to get repaired or replaced, Xikar. Service is fast and easy. I have two of them, but I just don't use them. One stopped working and I sent it back and it was quickly replaced. It worked for awhile and then stopped. The other is a dual flame that has worked for years and I use to carry it as a backup until I got the Ronsons.
Best lighter for fuel capacity and my favorite to use, Blazer PB-207. I'm on my third one. Limited warranty and service takes at least a month. I have returned at least two of them for service and they stopped working shortly after I got them back. Blazer seems to be into repairing rather than replacing.
I use to use a 3X fuel and switched to the Vector 5X and my current Blazer continues to work well. It has lasted longer than the first two, so I think most of my problems were from the fuel I was using.