I'm new to hammocks and currently own a Grand Trunk ultralight and an ENO ProNest. I also have an ENO Guardian bug net.
I use a separate tarp with a ridgeline above my hammock and attach the bug net to the ridgeline running beneath (but against) the tarp.
I tend to toss & turn quite a bit as I sleep (several back injuries over the years, plus a shoulder problem finds me struggling to find comfort in a bed or hammock). For this reason I am thinking a double bottom hammock might be the best option for adding a sleeping pad so that it can't move around as I toss & turn. Also I'm not completely happy with the ENO bug net. It extends to the ground and I find it tends to collect dirt & leaves inside at ground level.
The DD Frontline looks to me to be a good 3 season option as it should be breathable (with no pad inserted) in hot weather and a sleeping pad can be added in cooler weather. I'm guessing it could be flipped over with the netting underneath when it isn't needed (for using the hammock as a seat or in cool weather when bugs aren't a problem).
I'm looking for opinions from users of the DD brand as to the quality, comfort, and versatility of these hammocks.
BTW - I also like my hammock hung taught (little on no sag) when I use it, I just find that option the most comfortable for my back.