Im right there with you. My son is 16mos, and Im due the end of March. LOL! My husband and i currently have a B.O.B Revolution which we love, as it is the smoothest ride, and so easy to push and travel with. However when I checked into the Dualle(B.O.B Double Stroller) it is sooooooooooo wide, I couldn't even get it into my house let alone the trunk of my car. I have been doing some extensive research and found that Phil and Teds E3 Explorer(actually now the sport buggy 4, it just came out and has a much higher rating) is the closest Im going to be able to get to what I have, with a tandem stroller rather than one which sits the kids side by side. Almost every stroller out there now has an attachment which you can purchase separately allowing it to work with your carseat, except that Graco strollers will only work with Graco Carseats and I think Peg Perego has the same thing. Double strollers are expensive no matter what. The things to really consider are it's size in Width, as well as how it folds up for storage in your car. How easy is it to fold up and how heavy is it, when you are alone with the kids and doing it by yourself after a long day handling two really little ones... what kind of storage does it have, as your diaper bag is going to be doubly full with snacks, toys and diapers for the older one, and diapers burp rags toys etc for the little one. Does it have a snack tray, (the older one will love this feature later) Warranties, and ease of cleaning. Don't worry though you have time. Check out Baby-Gaga Stroller reviews at
http://strollers.baby-gaga.com/
They were really helpful to me, and then I found the strollers I marked off and went to test stroll them.