Hi D.,
I had the same issue while I was hunting for a good double stroller. My girls are only a year apart, so after a lot of consideration i went with the DUOGLIDER by graco. I haven't had any problems with it until now. They are coming up on their 1st and 2nd birthdays and my toddler doesn't want to be confined to the stroller ALL the time and baby number 2 doesn't like sitting in the back of the toddler!! Figures, huh!? LOL. Anyway, I am looking into a sit and stand or joovy tandem. They are basically the same just price rangeis different. It would have made any sense to get it sooner then now BUT at this point it is almost impossible for them both to be happy in my double.
SO in all i would suggest something that your older child has the "option" to sit or walk by your side. They are pretty universal too and fir most infant carriers.
Best of luck with your search,
C.
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