Hi, I have 2 DC now so really I should have got this all figured out already, but still I'm confused. Today I went to buy DS some disposable nappies, he weighs 7kg, is 3 months old, fully BF with the usual BF runny poo, and non mobile. He has a tendency to develop nappy rash, so with that background I had Pampers baby dry size 4 in mind (at 7kg he's at the upper weight limit of the Pampers new baby size 3 which he's been in up until now, but he still has frequent poo much like a newborn). Shop was sold out of P babydry size 3 and 4 so I went for Huggies superdry size 3. It seems that some size 3s are OK to 9kg, others just to 7kg, but when I put 2 of these nappies side by side they look identical in size. Also what's the difference between Superdry, Simply Dry, Huggies Natural Fit etc. etc.? With his tendency for nappy rash I'd prefer nappies with crystals rather than wood pulp so that we have maximum absorbancy (is my logic right here - or could the chemicals in crystals be causing rash?!) How do I know which nappies have crystals vs. which are just paper pulp? Are the supermarket own brand just as good as premium branded? My priorities are keeping Ds's skin healthy, minimising leaks, then cost. I tried washable nappies on him as I used these successfully with my older DD, but his skin just didn't seem to get in with them. My DD never had rash in her life so I've never had to deal with that before. Could you give me your insights and opinions - what nappies do you use and why? Many thanks