Yup, Scott, I am a convert. A few years ago, we paddled and carried into Newcomb Lake. My son had my old Peak 1, which leaked most of its fuel in his pack, and we (6 of us) had just 1 liter of extra fuel and my filled Xponent stove to rely on for 3 days of meals. That was when I started looking for a more reliable source of cooking heat.
The following Christmas my kids bought me a KK, I think it's a 1.5 liter, I know it's aluminum. It's very light in weight, and I have yet to run out of fuel for it!
Now, everyone we camp with is also a firm believer, after some initial doubts. Even in the cold, or on soggy days, the KK does a great job, and is faster than any fuel stove I have ever used or seen.
But it is bulky, and messy, the inside becoming coated with soot and ash after only a few uses. So, I just keep it in its sack and strap it to the outside of my pack, or relegate it to the food bag, if there is one.
I have a recently hired PhD here at work, his specialty is heat transfer...I'm going to have him do a quick analysis to estimate the BTU output of the KK, I'm fairly certain it will far exceed the fuel stoves.
I definitey recommend a KK for anyone that needs boiled water, for me, and my dehydrated meals, it's just about perfect!