Tandem/double strollers?

We have a 7 month old and are considering trying for another soon. If they end up being close enough in age to justify a double stroller, then we will probably go with the double version of the stroller we already have (Baby Jogger City Mini Double). It is a side-by-side, which just seems more managable to me, even if it is a little wider. Plus, it just seems nicer to put your kids next to each other so that they can each see everything in front of them rather than plunking one behind the other.