Ok so I have a double layered DB 72 and HG 0 Incubator on order and was wondering what kind of top quilt you would recommend. Given that I already added some weight(I want my system to be 4 season) I want to know the best 0 degree top quilt that weighs the lightest and packs the smallest.

Also if someone could explain to me the benefits of overfill that would help. Would a 20* TQ with overfill be anywhere close to the 0* regular stuff?

Money is not in question although I would be willing to manage 2 ounces instead of a cuben TQ if I can save a few hunnerd bucks.