I realise you have passed on them now, but just for interest, we used MEOS from birth until potty training on Charlotte. They were a great nappy for us, we used them unboosted (although neither of my 2 have been heavy wetters) and they become her nursery nappy once we moved onto pretty pockets at home - they were more reliable than pockets so better for nursery.
They aren't everyone's cup of tea - pretty boring and shaped quite generously between the legs (but therefore I found very reliable) but a great workhorse nappy for us here
They worked out great value too - we bought them second hand before Charlotte was born and as I say they lasted until the day she pt'd. If I hadn't been lured by pretty nappies I would have saved a fortune