C.B.
I have used both the side by side and the front to back. For me it was easier to use the front to back b/c you could use the infant car seat until they were both over 1. Then I switched to the side by side. Keep in mind that the side by side stroller the kids will be able to touch and kick each other so be prepared. I believe that they so make the side by side stroller with the infant car sear however I personally dont think it would be worth the money. Oh and one more thing. Side by side strollers are really hard to use in stores b/c they are wide and hard to fit through the isles. Hope this helps.