I bought a Hennessy Hyperlite Asym (1lb 7oz) hammock for my ultralight backpacking setup. Used only one time for one night. It turns out I don't like sleeping in a hammock afterall.
The cost was $219.95 from Hennessy. I will sell it for $200 and ship for free. Will listen to other offers.
Some of you probably feel otherwise, but I don't think a hammock is ideal for camping in the high Sierras. My plan is to buy a Tarptent Contrail and sleep on the ground.