My daughter was almost 3 when my son was born and I thought a sit and stand would work, but it didn't. I returned it a week later for a side by side, maclaren. It was bulky and didn't push well at all. Finally I splurged and bought the baby jogger city mini double and I love it. My kids are now 3 and almost 6, and I still use it regularly. It pushes so easy and turns on a dime. Even with all the weight in there now i can still push it easily and it is a godsend when going anywhere with both kids. It has held up great and still looks almost new despite all the use. My kids are big and tall for their age and both still fit in it very well unlike the maclaren which was very small and cramped. It fits through any door, and is so easy to maneuver compared to any other double I have tried. I also bought the belly bar and holders for when the kids were little but now they just jump and in and out as needed and I don't use that anymore. I would highly recommend getting the baby jogger city mini double, it is an wonderful stroller. Sometimes you can find deals online, I bought mine from baby grand online when they were having a sale, but many baby places have sales, I think I got 20% off plus free shipping. I hope you can find one you can afford it is so worth it!