Hey magnum guy...

I've been an advocate of heat exchangers since the MSR model came out. Even at 8 oz I think its worth its weight on a 2 liter titanium pan for winter snow melting duty. Since it hangs on the outside of the pot, you drop it an inch so it acts as a wind break and collects all of the heat from the stove and funnels it up the sides of the pan.
Jim
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These are my own opinions based on wisdom earned through many wrong decisions. Your mileage may vary.