I would say a climasheild Apex quilt with momentum.
Apex is relatively cheap, easy to work with, no down hassles, dont have to quilt it, about like 550-600 down for weight vs warmth.
Once you have your pattern set up, you can make one in about +-4 hours
depending and you dont end up with down everywhere.
Quilt is lighter and preffered in a hammock. If you are a side sleeper or a flip flopper a quilt works better.
Depending on the size and type of momentum it should weigh about 12-14 oz for a 1+ season quilt with 2.4 oz apex.
In extreme cold I do think a down mummy bag is better on the ground since you can close it down around your nose, but as a side sleeper, I am constantly fighting with the hole.