Swim diaper recommendations?


I'm looking to start swim lessons for my almost 6 month old daughter & I have to buy a reusable swim diaper for her (all the pools around me require the reusable kind). I've tried to do some research but I'd love any input & personal experience.

What are your favorite reusable swim diaper brands? Do you like the one size diapers or the sized ones better? Any diapers to stay away from?

Oh & just for fun, any cute picks of your little ones swimming are more than welcome!