I've used the MM purple nights, they're quite good.
Another I've used for nights are the Motherease one-size in bamboo with a Starbunz or Stacinator cover - it actually made the distance [and some!] and it has almost no bulk. DS2 sleeps better in it than any other cloth nappy I've used.

As PP said, everyone has their faves. You'll get alot of good advice here.