Use the one that works for you. That's the only real measure. It sucks but it's true - by the time someone has pared their load to "ultralight" that's how it is....

Neither one is really an "ultralight" pack - you'd end up with something frameless by then.

I have a ULA that weighs less than either of those, that works with a bear can, and works with me....
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"In the beginner's mind there are many possibilities. In the expert's mind there are few." Shunryu Suzuki

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