In my experience less expensive hammocks tend to be of cheaper material, and can actually stretch and sag overnight. Once one was so bad I tossed it.(I sleep in a hammock every night, with a stand in my bedroom instead of a bed, so I buy a several cheap hammocks per year). Sometimes the quality of the sewing is top notch, but the material does not last. Also, the cord used to bind the ends tends to be MUCH cheaper than a better brand.

For my actual touring, I use a Grand Trunk skeeter beater, and I just got an Eno Jungle Nest. Neither come with a tarp, but I like the more compact shorter hang compared to the Hennessy. I sewed my own very minimal tarp. I take a quality hammock on tour because they tend to be more robust and durable. All the hammocks I use have built in netting, I like that, and they tend to be more expensive. The Grand trunk hammock is a little bit lighter than the Eno, but more fiddly to get the netting right.

The Hennessy is large and comfortable. Compare prices for the straps and tarp and hammock, and you come close to the price of a well engineered system like the hennessy. I choose not to have one because I like smaller hammocks. I have friends who really like hennessy, I am glad cause I recommended it since they were beginners at hanging.

And do check out the Hammock forums, but remember that there are a few of us here who use them on bike tours.