I had the opportunity to try out a hammock while hiking last week. First two nights were in a hammock, slept like a baby, almost as good as being at home. The last night was in my tent and I was miserable, my back hurt and I couldn't sleep.
I was very skeptical about it, but after the sleep test I hope I never have to sleep in a tent again.
I'm going to buy one for me and my son and its a toss up between Grand Trunk Skeeter Beater Pro and Eno. I like the attached bug net on the GT and the lay seemed to be better as well. I'm going to make my decision next week after I do more research.