I used a cradle with DDs 1 and 2 and a hammock with DD3 and I love the hammock. DD3 is by far my best settle-er (not necessarily my best sleeper though!!) but I have no idea if that is because of the hammock or just because of her.

I had a capsule for DDs 1 and 2 and they both hated it. They both had reflux, and from what I was told the slight curve they are on in the capsule can put extra pressure on their tummies. Don't know if there's anything to that, but mine both had reflux and both screamed blue murder in the capsule. DD3 I didn't bother, but with school drop offs it would have been fantastic so if your bub likes it, I think its a great idea