Jim Benenson wrote a review of Jetboil Flash Personal Cooking System on August 21, 2012
I take my Jetboil Flash system with me every time I "go out", whether it's backpacking, car camping, fishing, or you-name-it. I even use it at home when I want a quick cup of tea or instant soup. The piezo always lights and it boils water VERY quickly, and it's convenient to carry. When I need it I also bring the JetBoil pot and/or frying pan.
The design, from the heat-containing fins to the foam cozy to the boil indicator, there is no better, lighter, more convenient cooking system. Period.
P.S. I am not prone to exaggeration but in this case...