This stove outperforms the competition in efficiency, weight, utility and longevity.
At first I thought JetBoil was a gimicky stove, useful to a narrow range of users. What I found on several trips - including climbing above 7000 meters and making coffee on El Cap - was that the JetBoil offers the highest possible performance and reliability for an entire range of outdoor activities from hiking to climbing.
The burner is so efficient it provides a team of two, enough melted snow and boiled water, to last two days of a single 8 ounce can of iso-butane (even under -20 degrees fahrenheit).
It easily converts to a hanging profile with the commercially produced after-market kit, or a piece of perlon and two zip-ties.
With the ease of availability of iso-butane even in places like India and Pakistan (albeit expensive), the JetBoil is the best go-anywhere, do-anything stove.
It's also way lighter and compact than any comparable stove. Over the course of three years I've had none of the issues that plague other stoves like reliability, messy fuel, unavailable fuel, or explosions. With the after-market camping kit, you can cook for a group and even simmer.