We used an Amby hammock for DS and I love it, will be using for this baby as well.
The hospital had them when I was there and it was the only thing that settled him the entire time we were there, so MIL got us one and it arrived the day I got home from hospital. I reckon its the best thing we had for DS.
It was great as he was still a little jaundice when we got home from the hospital, so I could move him to whichever part of the house was getting the most sun very easily.
I did split his sleeping between cot and hammock too, so there was no issue trainsitiong for on to the other.