I have used babybeehinds with covers as a night nappy before (also used their trifold booster). It was great for a a huge stretch of time and never had a leak.

We are currently using cuddlebots pocket nappy stuffed with with a homemade hemp and microfibre prefold and a babybeehinds trifold booster. Also good. We only switched as DH was having trouble grasping what needed a cover and what didn't (i.e. DS went to be in babybeehinds fitted with no cover or even two covers )