Thanks everyone for the help. I should clairify that I'm not at all fed up with using cloth. I love it and even though we are having a few issues, we had far more issues the times we tried to use sposies. We recently went on vacation and thought we'd try sposies at night and we got leaks every single night. At least with cloth we're only getting leaks every now and then. I think part of the problem is that all our cloth nappies are clean and dry at the moment so I'm overwhelmed with how much we have. (Not nearly as much as some of you though, probably something like 30 nappies).
The pockets we have are BGs (stuffed with BBOS insert) which are working well, Happy Heinys OS which fit great but are quite wide and so haven't found a good insert for them and I think that's why we're getting leaks with them, and a Nature Babies OS stuffable which is my favourite of all the pockets--don't think it's ever leaked.
My other dilemma is that Leo is 18lbs but still on the tightest setting on his size 1 sandies, and with the HHs we still cross over the tabs all the way (which is why the fit is so good). However with Pop-ins, they're almost bursting at the waist. Very confusing.
Claire--I had no idea I could order WNNN with my voucher!! You've just made my day as I've been wanting to try one of those. Thank you so much for the offer but with the snow I don't think I'll be able to make it to Hindley tomorrow.