i prefer a colder rated UQ than my TQ.
my thoughts are that a UQ can be setup to allow some airflow if needed
and if i get too warm in the middle of the night, i can vent my TQ as needed.
plus i can add more top insulation like jackets and such easier than adding to
that's just how i roll.
p.s. i'm no pro!
P.s.s. i have a different color UQ than my hammock. that helps me see the hammock at night.
i have accidentally set in my UQ and missed the hammock all together, that is painful on the coccyx.