I personally don't like the can light for two reasons. It's a can attached to your but and I already have enough gear hanging off of me, and the other reason is I don't want the cord which is one more thing to get in the way. I'm using the Big Blue 3,500lm as a primary and two of their 1200np lights as backups. I've been very happy with this and usually don't use it on full power anyway. It's also a lot les expensive that a can light and much less cumbersome while being very bright and having pretty reasonable burn time. there's also a Goodman handle available that costs $99 which is pretty expensive for a little piece of bent aluminum but even with the light and handle, it would still be less than half a can light from light monkey.
I know some people that love their can lights though and that's just what they're going to use. If you have a chance, try both and see which you personally prefer. One thing is for sure though, if you're back in a cave and all your lights die on you because they were cheap Chinese noisy crickets, you would have wished you'd spent more money for a dependable light.
People will often take cost into consideration when it comes to things your life depends on and I don't understand it. When you're in a situation where you might die, I guarantee anyone would spend a million dollars to stay alive. I've had a parachuting accident before with a collapse shoot and a failed reserve, thank god it happened at around 70 feet up and I only broke my back and had to have a spinal fusion. Primary's fail and backups fail, do you trust your life with a $80 noisy cricket from China.