I had two double strollers when my two were little bitty.
I had a tandem (Graco Duoglider) that I used for shopping, the mall, etc. It was narrow, dealt well with store aisles and was easy to maneuver. I had a side-by-side double jogging stroller (Dreamer Ditto) with heavier duty wheels and a fixed front wheel that I used for off-roading. Taking them out on the Monon trail, air shows, etc. The tandem's wheels did NOT do well off pavement, so if you're somewhere like an airshow where you'll have to be walking through dirt, go with the bigger wheels & a fixed front wheel of a true jogging stroller. The seats on the jogger were also more plush, and it even had shocks & springs on the wheels, making for a very comfy ride for the kids. That thing was expensive, but worth EVERY penny. I also got 3/4 of the purchase price back on it when I sold it when they got too big to use it anymore. BUT that jogger did NOT fit through standard doorways, so using it in a store or mall was out of the question.
