I once had a WisperLite explode on me when I was twelve. The clip that holds the line to the bottle head detached when I was pumping it. The gas blew on my bare arms before it was lit by the fire on the stove's burner.
Lost all armhair and had to hike 25 miles out with red sunburned looking arms.
In retrospect, I would like to have a picture of myself at the panic point just before the fire was put out.
I continued using the WhisperLite for several years but have now switched to an MSR canister stove which does not require maintenance, burns well everywhere, and is lighter in weight.
Beck's assessment of the WhisperLite is right on, but I would probably use an International if I were going overseas.