The only hammocks that are any good are Mexican from the Merida Region. Check out Mexihammocks:
Mexihammocks.com
I have bought and sold over 30 hammocks from these guys and slept in one of the Familia hammocks for a year. 12ft long and 8ft wide when stretched open. They use over a mile of thread in each hammock and they really are made for a whole family to sleep in at once:
These are on sale right now for $50. Well worth the trouble to import one if you willing to make the effort. Their hammock chairs are also very good: