well i found the weenotions site before I bought anything and soo wanted these
everyone told me to buy preloved (from classifieds) to try different types of nappies and so far i have blueberry, weenotion sidesnaps, weenotion one size and weenotion ai2, i also have itti bittis and a couple of upsy daisy and a cushie tushie couture.
My little boy is nearly 9 months but just over 20lbs and really long and slim legs so I gambled with large and luckily that was the right size, i fine the one size are a little bit bigger around the legs.
I highly recommend getting some off classifieds first, all the ones I have bought have been in excellent condition and often have come with an insert so have been much cheaper than buying new. I am waiting for two night nappies (from classifieds - weenotions) and once i have them I am going to try him over night in cloth
If you have a look in 'getting to know you' thread, most people have put their fave nappy site and if you look in reviews of nappius you will get some honest feedback about the nappies