I own the MSR Simmerlite (4 years), and the MSR Whisperlite (15+ years), and have had used several well-worn MSR Whisperlite internationals before. In my experience the flexible fuel line is the most likely point of failure for these stoves. My original Whisperlite has eventually developed enough of a kink in the line so that the flow is restricted and I do not get full power even after repeated cleanings and repairs. It has largely been retired now.
The Whisperlite international has a thicker line than the original Whisperlite, and I have never seen that thicker line have the same problem. My guess is that this is one reason the international version has a bomber reputation and that is why they continued using the same line (apparently) in the newest model.
My Simmerlite has a line similar to the windpro model, and is much more flexible than the original Wisperlite, but has not developed any fuel line problems... yet.
In my opinion the Simmerlite (@179g stove only) is still probably the best white gas stove. If you need liquid fuel (winter, big groups, etc.) then you should use white gas over an inverted canister because it is much cheaper and easier to measure out. If you can get away with canister/alcohol then there are much lighter options. The only way I would want a heavier white gas stove is if it has a second fuel knob at the burner like the MSR Dragonfly or others from Primus/Optimus/Brunton for true simmering ability.