highly recommend the bummis whisper wraps too. you can then buy the prefolds at a later date if you decide to use cloth. my son is a heavy wetter and we've been using the wraps since he was 5 months old (now 9 mths)with prefolds and liners and no accidents. they dry super quick too. take a look at www.realnappies.co.nz or www.plushbaby.co.nz for more info
this system is fantastic and cheap as chips!!