I don't really like Wonderoos as I find them a bit saggy and Charlotte ends up with builders bum! Mommy's Touch are alright. Bumgenius I think give a better fit but are a bit boring and the velcro starts to look a bit shabby after a while.
My fave pockets would be Pocket Bots, Wee Notions and Happy Heinys.
Try one of each and see what you think