Thanks to you all for responding. I neglected to mention that I have researched bikepacking.net already and am active there. I have now checked out hammockforums.net and there is a decent amount of info but not all of it works for bicycling. Crazyguyonabike also has some info.
I keep hearing about the weight and cost of the Hennessy being primary factors but the Clark is just as light (some models lighter) and cost is pretty much a wash. Both the Hennessy and the Clark have some nice attributes. Warbonnet, Speer and others seem less developed to me and what I'm reading or maybe they are just no frills, get the job done simplified. Its all good though. All your help has opened up some nice new reading for a cold day and helped broaden my options.
In the end I might just go with a Tarptent, or maybe both. I've already got a nice light BA tent though and for some uses the hammock seems perfect. I've got time to figure it out.
What makes you think other models are no-frills?
I have hung with folks at hammockforums.net and have seen Hennesseys, Clarks, Speers, Warbonnets, Grand Trunks, home-sewn, and I hang in an ENO. None of them are "no frills" to be completely honest with you. "no frills" is sleeping in the dirt with a wool blanket a-la 1850.
the great thing about hammocks is the ease of customization. You can change the entire suspension setup simple. I hang my ENO Doublenest on whoopie slings made from 7/64" Amsteel blue and tree straps. I also have an Amsteel structural ridgeline to ensure a perfect hang every time. I use a Warbonnet Traveler bug net when I need bug protection (the ENO bug net sucks), and I can sleep under any tarp I choose.
Hennessey, Warbonnet, and others have integrated hammock-bugnet systems that reduce the amount of material. They're slick.
There are gathered-end hammocks and bridge hammocks that offer a different style of lay. The only difference is personal preference.
You only notice Hennesseys more because they're popular. If you spent more than an hour at hammockforums, you'd realize that your assessment of hammocks is incomplete.