If you want to get off the flat and up the hills with your wee one, a child carrier is called for. But which one? David Lintern and family take a look… The adage ‘try before you buy’ is never more true than with child carriers – they are relatively expensive, have differing features, and a relatively small window of use before your little one isn’t so little anymore – so you want to get it right. And a bit like rucksacks – even if you find a retailer that stocks a variety of these to compare them properly in…