As a mother of 2 small children (now 3 and 1), I am speaking from experience. My son was 2 1/2 when my daughter was born and I thought that I had to have a double stroller.  Well let's just say that I didn't get the use out of it that I expected to get.  First off, he never wanted to set in it.  He would rather walk beside it.  And after about 4 months he was too big to ride in the front and the only place that she could ride was the back since it would fit the car seat. 
Anyway to make a long story short.  I ended up selling my double stroller in a garage sale and getting a small fold up stroller.  Hind sight being 20/20, I wish I would have been smart enough to find the set n stand strollers.   That would have been ideal for my situation.  And I could have kept a really good eye on him because he would have been right in front of me instead of off to the side.  I hope this helps other mom's trying to make the decision of what stroller to get.  I only wish that this kind of information would have been out there when I was making my decision. 
Please rate this review, if you found it helpful.  Thanks.