In one day I received the FireLite SUL-500 mug and the matching Caldera Cone and its "kitchen" set. I just did some backyard testing; 75° in the shade, 12% humidity, 100' above sea level, and 5mph breeze with 14mph gusts.
With the Caldera Cone and its included stove, these conditions yielded a rolling boil after 5 minutes with 25ml of alcohol (10ml more than the manufacturer's claims). The boil lasted a solid two minutes before the fuel ran out. Similar tests with a DIY SuperCat stove yielded a rolling boil in 6 minutes on 40ml of fuel (requiring a refill)...and a SuperCat stove inside the Caldera Cone (pot sitting on the stove, not held up by the cone) created a rolling boil in 4 minutes on 30 ml of fuel, faster than the supplied 12-10 stove, but there wasn't enough capacity in a typical SuperCat to sustain the boil more than a few seconds.
All Caldera Cones are made to fit a specific pot; the fit on the SUL-500 is incredibly tight, so much so that you always have to expect to pick up the cone with the pot itself (I am using my multitool, a Leatherman Squirt P4, as a pot holder/lifter). The instructions infer that this fit will loosen over time. This isn't a huge inconvenience and all the components were cool to the touch within 120 seconds.
The fit of all the components (hint: put the stove upside down and over the lid of the fuel bottle) was quite fortiutous...
I'm a Jetboiler/FBC eater who's making the switch to alcohol...these results have me convinced! (Don't get me started on the lighting and piezo failures of the Jetboil!)