Best hammock out there is the Bear Mountain Bridge Hammock (BMBH) by Jacks R Better. This hammock has a completely flat lay with a built in bug screen. Instead of using an under quilt, you have the option to slide your Neo Air or Big Agnes pad into the sleeve to create that insulting value on the bottom side. I have tried an under quilt and not a fan. The down quilt is susceptible to getting wet when fog and blowing rain comes in under your fly. IMHO, the warmth factor per cubic inch of bulk does not justify the cost or space in your bag. My therma rest is only two ounces heavier than the under quilt and can be used on the ground if I need to set my fly up on the ground due to no trees for the hammock.

Http://www.jacksrbetter.com