Hassle free , breathable, nothing in the hammock, comfort... go with the full length UQ...Should you ever misjudge the expected temp your sit pad, assuming you carry a small one, can be your CBS eliminator or reange extender.
Weight issue is about equal given the smaller sit pad than the pads most fractional UQ users are reportedly using.
I may be biased but JRB sells both full size and fractional UQ so this is a fair opinion.
Ounces to Grams.
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