Many people swear by them. Like the others I've had a couple and they were OK....just. If you're after a really cheap option China Cheapies from ebay are one. Many people rave about them. I've used a couple and they were fine.
Otherwise prefolds and covers are great for NBs and good cost wise.

I loved a tonne of diffferent brands (this is my third cloth bum so I've tried most). I don't rate ittis or baby beehinds at all but many people love those for NBs.

oops this thread reminds me I have some tiny nappies to do a sale thread for.