RE: Jungle Hammock
You could look at these as well, there a little more basic but they are a little cheaper as well. I like the entry from underneath.
I talked to a Soldier who slept in one during his tours in Afghanistan and he loved them.
Only thing he recommends is a bigger raincover than the standard one.
I'm planning some extensive jungle hiking in the amazon and I'm going to try the hennesy. I think the one you mentioned will do better in colder weather.
F.