First, let me say, I have never operated a Brunton Helios. It seems very interesting, and yet I still won't buy one. Here is why I guess.
My experience with butane lighters is they do not work well in cold weather. I hope someone has experience with the Brunton and can tell me otherwise. I would love to hear it.
I winter camp, so that is an issue for me. I refuse to have a "winter set" and a "warm weather set" of stuff.
There is always the argument that you can keep the lighter warm, but next you start saying that about your gps, then your batteries, then the next thing you know.....you are out of room in your sleeping bag!

I prefer to just keep things simple.
Also, with the "fancy" lighters (and I have had a few) the weak link seems to be the ignition system. They say they are rated for XXX thousands of cycles. But, I personally believe that is in a laboratory, because I have had many quit. When you are actually lighting things, I think a residue builds up that causes the ignition to quit long before the ratings. At least that is my irresponsible speculation
With all that said, I prefer the plain old zippo! I know people are going to have negative things to say about my choice, but here is my justification.
Fuel evaporation - Yes, if you fill it, the fuel will evaporate in a matter of days. I have an easy fix. I put a ranger band around the opening, and the fuel will literally last for months! I was trying to do experiments with how long it would last, and I kept getting bored with it. Let's just say, it is WAY longer than I need. Not to mention that the ranger band has the whole "multi-purpose" thing going on
Ignition System - Plain old mechanical and simple. A flint last a LONG time. Even so, I carry a spare in the container. If worse comes to worse, and you have NO fluid available anywhere, you have a very good, mechanical source of creating sparks.
Fluid - You can carry 1 oz of fluid (everyone can afford to carry an ounce) and that is enough to last you a year or more of lighting fires.
Windproofness - Zippos work okay if the wind is from the side. It is how the chimney works. They way I look at it, if you have 80 mph winds, you won't be lighting a fire anyway. You are going to have to seek a windbreak, and while this feature sounds all glamorous, it is not as big of a deal as it seems.
Leaking - People claim zippos leak. I think they are talking about fuel evaporation. I have been using these things since I was 12, and have only had one leak once. That was because I filled it up too much. Even at 12, I figured that one out, and have never had the issue since.
Cold Weather - They work great. What more could you want?
Everything is personal preference, and the key is making things work for you. With the things I have mentioned, I am fine with the zippo working for me.
Like most things, I just like simple things.
As a funny side story, I winter camped twice this year with a friend that is a female (not to be confused with a girlfriend

) and she had a fancy, expensive butane lighter. She kept trying to keep it warm, and could never get it to work the whole time on either trip. I would hear her trying to do something and kept hearing "click, click, click, click.........." I would walk over and flick a bic and piss her off every time

At least I thought it was funny!
B