I use mostly Alva pockets and Econobum prefolds with covers. The Econobum is the only one that doesn't leak on us while they sleep. I have a Fuzzibuns OS elite, but I'm not a fan. I've also used Coolababy (leaked) and the chinese cheapies Babyland/Babycity, those delaminated in cold water after a week.
http://www.cottonbabies.com
http://www.alvababy.com