Update:
I was most interested in a Hennessy Hammock but couldn't afford one so I decided to take matters into my hands and built one, actually two. The first one was a side entry with netting and a zipper entry, and the second is a bottom entry with no zipper. I find the hammock to be very comfortable for sleeping but can get cold with no insulation in the bottom. I hope to continue with the hammock at some point due to the light weight (less than 2 lbs. and the comfort). However, I have found them to be impractical when trying to camp with small children. I have not been able to find a way to sleep next to another person in a hammock. Until may boys are old enough to sleep on their own in the great outdoors I'm going to have to stick with a tent.