Yes, the Reactor is an excellent stove. That’s what we bring when we have a larger group and more demanding (higher volume) hot water needs, like during elk season. But as you point out, it’s basically in a different category.
I’ve used a JB Sol Ti for many years now. The HX fins are still in good shape. I picked up the aluminum cup just in case since I like the system for solo travel. I will try the Stash but it will have to impress in order to displace the Sol.
I guess I understand Ryan’s reporting of the 28-minute boil for completeness’s sake and intervening would have violated the experimental conditions, but it’s a silly and gratuitous value. Any normal human would have pulled a glove off and placed a warm hand on the cooling canister to restore the volatilization of the liquid fuels after a couple of minutes. I mean, who would sit there helplessly for a half hour?