It has a heat sink (That's important)
929419
This is the first and only butane burner I've purchased, so I have no way to make direct comparisons.  But I did a fair amount of comparison shopping and found the following:

Butane burners are used a lot in Japan for something called "Hot Pot" where they keep a pot cooking right at the table.  Iwatani appears to be a leading manufacturer catering to this Japanese market, and has made a technologically advanced product with safety interlocks, thermal safety shutoff, and a heat sink.

The heat sink was what made this burner stand out for me, and I only found two models that include it in their product description (the other is made by Sterno).

The heat sink is a piece of thick aluminum that transfers heat from the burner flame over to the underside of the butane canister.  As the butane dispenses, the canister tends to get very cold.  When the canister gets cold, the butane doesn't dispense as reliably, and your flame is inconsistent.  The heat sink warms the canister, ensuring reliable butane flow and a consistent flame.  And it really works.

The case is OK, and the burner construction seems like what you'd expect from quality stamped sheet metal--not "rugged," but well-assembled and good fit and finish.

The output is impressive, and a little surprising for a guy who has cooked only on electric stoves.  When I set the dial on "simmer" to heat up my Lodge Seasoned Steel skillet, before I knew it the skillet was over 600 degrees.  So there's plenty of power there, and a caution to keep the flame lower than you might think necessary until you master the stove.

All in all, I'm impressed with the burner, it's great for a little "gourmet" action when traveling, and it has features that seem hard to find on the cheaper units.
3046187
Although it works as it should, it is quite warm to the touch even when off, therefore it is using electricity even when it is not running an appliance.  Don't leave it plugged in when not actually being used.
2935345
Yes, it keeps things cool. It also takes up less space in a tower in comparison to something such as a noctua heatsink w/ fans. However it seems to be fairly loud under medium to moderate load. It tends to be very loud in comparison to normal giant heatsinks and fan which is disappointing but at the cost of never over heating.
3075454
Antec Performance Cpu Cooler with Heatsink and Ball Bearing Fan
 the heat sink game on time and it work vey well
2296480
i've been in the biz for 28 years and am skeptical of third party components, so my expectations were low when I ordered this product.

I have an older Intel 945 based system w an old 3.4Ghz P4. This processor pulls up to a whopping 89 Watts and required some serious heat dissipation. When I orginally built this box I used the appropriate Intel heat sink and fan. Despite a beefy case and plenty of internal cooling, the processor fan would constantly spin up to a decibel level loud enough to prevent me using the computer often.

The item arrived in 3 days. It's very nicely packaged. The heat sink and fan are beautifully engineered and screws and pins are packaged separately.

The installation was no picnic and is not recommended for those unfamiliar with building systems. Functionally the product is clearly 5-star, st least for my specific application. The installation difficulty, relatively high price and a few minor details drop it to 4 stars.

At first the installation guide looked concise, straightforward and comprehensive. It's only after you begin the installation that you'll wish you had more information. At first glance it doesn't look like the unit will fit in the cramped quarters between the processor and other components. There's really no way to precisely test fit the product prior to installation. I was so skeptical I initially rotated the base 90 degrees from specification because it looked as if the fan would not clear an adjacent heat sink. Now the good news: I was able to easily remove the base without damage to the fragile-looking mounting pins and associated locking pins adn reinstall it in the correct orientation.

Once I rotated the plate I was able to install the heat sink. I was truly amazed at how the fan clipped perfectly into place with barely a millimeter to spare. Once installed, the unit worked flawlessly. The heat sink is so efficient the fan often shuts itself off completely, and it's so quiet you'd have to be looking at it to know it's running. Sorry, I don't have before-and-after specs for CPU temp.

I highly recommend this product, but see the following notes to save yourself some potential grief!

Installation advice:
1- Look at the directions (images only, no text) to ensure the base is mounted in the correct direction.
2- Be very careful not to touch the processor contact area prior to final installation. Doing so may smear the grease patch or scratch the heat mating surface.
3- The cage covering the fan has gaps wide enough for stray cable to enter. Be certain to tia all cable well back and out of harm's way.
4- VERY IMPORTANT. Check to ensure the base mounts completely flush on the motherboard. Use several pounds of force to ensure the mounting pins are pressed as far down as possible. Carefully press the mounting pins down HARD using long needle nose pliers.
5- It's difficult to access the screws required to secure the heat sink to the base. You'll need a long, thin phillips.
6- The fan connects to the heat sink with two plastic clips. Be sure they clip in place. Tug on the fan to be sure it's locked firmly in place.

Suggestions to the Manufacturer for "rev 3"
1- Find a technical writer to add text to the instructions and to address the above potential issues.
2- The pins and screws are so difficult to access an included tool specific to the task would make the installation MUCH easier and reduce the risk of damage.
3493096
It heats up, it works, and it does the job affordably.
be warned, this is a SINGLE setting item.
Just don't run it over a long period of time, and keep it close to the item to be heated and it works well enough.
1351322
Omg this heat sink was was bigger than my stock for the cpu. I literally had to change pc cases to accommodate the size. But that is no down side, an example of the temp change was about 25-30c cooler when using this compared to my stock heatsink and fan. I tested this on the witcher 3, with my stock cpu cooling my cpu was about 80-85c, when I switched to this cooling the most it ever gotten to was about 63c. The only problem this has to me is that it has quite a loud fan, a pair of Good headphones is a requirement to drown out the background noise.
4236232
It is a snap to install the hard drive in the case, but to make the usb work require proper re-formatting of the hard drive. Since it does not come with fan, it can get pretty hot if used for a long time.
4516479
This keeps my PC a little bit cooler than the stock fan/heatsink that came with the processor, so for the money, it works for me.  I kind of wish it had the thermal paste pre-applied to the bottom, but it does come with a small tube of it, so just do it yourself.
4189526
This heat sink is big, but well worth it!! Brought my 95tdp i7-870 from 75c (on a stock cooler) to an awesome 59c(While gaming in MAX). The back plate didn't work well with my MB though, I had to totally dismantle the CPU housing and reposition the CPU housing plate from the back of the heat sink plate to the front. because the hyper 212 led didn't have the appropriate holes to match. When mounting the 212's back plate over my cpu back plate, the female inserts barely came through the MB. It was a difficult attach, because i had to use a torch wrench to make sure all sides were even, as the heat sink leaned as tightening. All and all, even with maybe not a perfect thermal compound laid, i still see awesome temps 4stars!
4209546
I have this heat sink installed on two of my home PCs and it seems to be magical compared to the performance of the heat sinks I replaced with it.  Don't overlook the fact that you will have to remove your motherboard to install it so you will have to work for it, but I promise you its worth the effort.
469644
My early feedback is this provides exceptional cooling when it is needed for hardware that is overheating. I did not use it for a laptop, but I used it for a compact media center that needed additional airflow so the video and cable cards stopped overheating.
4555579
I bought this becuase my laptop was starting to get really hot. Since using it, the computer has not crashed. It does what it's supposed to do. And it's not over priced.
3080379
It's been a great case so far, however the fact that you're forced to have a particular heatsink in order to properly cool your processor is bit of a negative to me.  Otherwise I don't have any qualms with this case.
342442
This is my second one that I bought. It does deliver just more than 8 amps but does start to limit current as the heat sinks heat up. The original one I bought burned the chip off the board because it got too hot. A fan is a must for longevity if using it at higher currents.
4017927
The heat is gentle but effective. The fan is so quiet that I forget it's running. I like it so much that I'll keep it even though it wound up being an extra this year. (I do have a theory with space heaters that one can never have too many when there are many spaces.)

It looks as though the fan has variable speed but actually as you turn the dial, at a certain point it clicks into its higher speed and that's it - two speeds. There do seem to be three different heat levels. And one for fan alone, which produces a pleasantly gentle fan effect even on the higher setting, rather than one of those that blows all the paper off the desk.

But do watch the price - I got mine for half what the retailers are asking here, at a certain ubiquitous W place.
281518
I have a small motherboard so this sucker takes up a lot of room. But the setup makes it adjustable and it fits great. It's quiet and has my cpu 30 degrees cooler than my last heat sink.