“colder water (50 degree), same amount (4 cups) and have achieved boil times as quickly as 3-4 minutes.”

Another curious person here.

My pepsi stove does 60F, 3 cup H2O, 1oz Heet, in 6.5 minutes (rolling boil with flaring steam) with 2.5 minutes more on top of that and I thought that was good!

The web sight rates which one boils fastest. And, as always, any titanium stove is going to do bad. But I also like to look at how much longer the flame goes. This gives me a good buffer estimate for field use.

-Barry