DS will be 2 years 8 months when DD is born in May. He's not a big fan of the stroller anymore, so we're thinking a sit and stand might be a good approach for us. Any recommendations? We're currently looking at the Joovy Caboose Ultralight and the Joovy Caboose Varylight because we've had great experience with our single Joovy umbrella stroller, but open to other options.