I want to get one that I can use from newborn through to as long as possible - we go on lots of long walks on the moors, and I want to be able to take baby with us (and a pushchair won't work, even an all-terrain one!) I also want to be able to have baby in a sling in the house. However, I'm so confused about which one to get as there are so many out there. Baby Bjorn ones look easiest to use, but a lot of people don't seem to like these? Is it true they can cause hip/spine problems due to the way they put the weight on the baby's crotch? So then I've looked at styles like the Moby wrap, but that looks quite complex to use (not to mention rather expensive for what seems to me to be a piece of fabric!) Any recommendations from sling-users out there please?