I'm looking for a light weight, easy fold stroller for occasional granny duties. I think I've come up with a short list of Silver Cross Pop, Joie Nitro and the Nuna Pepp (original not Luxx) and although I've been to look at them all, I'm struggling to make a decision. Can anyone shed light on the pros & cons of each? Oh yes, my first grandson is 5 months old and my daughter's baby is due in March.