I have had a Bertini pushchair for many years with the toddler chair to adapt to double from single.
I have loved it and resisted change but the fold-down handle refuses to stay in place now so very, very irritating.
Can anyone recommend a single to double tandem please? I have had a Graco tandem in the past but found it very stiff and heavy.
I would prefer one pushchair because of limited space.
I had a lovely Mothercare side by side but couldn't get it through the front door 
I don't want to pay too much and happy for second hand.
I have looked at Phil and Ted, Obaby and hauck, has anyone any experience of these?