Brian Lohmanwrote a review of MSR WhisperLite Stove on September 25, 2016
Familiarity: I've used it several times
I have now owned two of these (both the International (from another retailer) and the basic Whisperlite (from Steepandcheap)) and found both wanting. I returned the International because the valve/throttle was extremely stiff and even when I swore I had closed it fuel still leaked into the stove. In contrast, the fuel pump valve/throttle on the DragonFly is smooth as butter with clear tactile feedback about how open/closed the throttle is when turned. After returning the International, I bought the basic model but had the same problem. Additionally, the pump lasted about 14 uses and now is broken. The piston moves freely and doesn't compress air. I suspect an o-ring has fallen off. I'll contact MSR/Cascade Designs about fixing it. I wonder if it would be possible to use the DragonFly pump on the Wisperlite...
This stove has near universal acclaim and I've enjoyed using my brother's. Perhaps I'm just unlucky?
Size, fuel consumption, weight, and heat output are all what I expected, but build quality is lacking.