Mother-ease's All-in-One diapers, a diaper and cover combined, are the only cloth diaper I've used on my son that consistently NEVER leaks.
I like the side snaps--they're easy to close with a squirming toddler. I also like the terry cloth interior--it is very absorbent and handles a doubler well (the terry cloth keeps the doubler in place for nights, or times when I think he'll wet a lot, such as after drinking).
Brand new the XL (28 lbs and up) costs $14.95, and when you buy 12 you get one free! I've had success getting them for about $8-9 used, though.
I never thought I'd be a cloth diaper user, but I've found it to be easy. We wash them at home in the washing machine and don't dunk--just double wash. These handle being dried in the dryer, though this does reduce the life of the diaper cover, as it will be less water resistant than air-drying. I use the dryer when I'm in a hurry and haven't noticed any problems with water resistance, though.
A great diaper overall!