I've used the hennessy in Cali, Mexico and Newfoundland. It's awesome, if you are going to be in prolonged rain storms nothing beats it, same for bugs, it's the shit. Make sure you can sleep in a hammock first, a lot of people can nap in them but just can't sleep in em for some reason.
Good company with a good product, they are super friendly, and the hammocks last, I've had an ultralight a-sym for five years with no problems. Ground pad is necessary for cold weather, their pad system works great. I found a regular ground pad a pain to keep under me during the night.
For the lazy mans super quick setup, bowline on a bight each end and 6' cam straps, 10 second setup.