I use it for siblings of different ages. I must say, we could go through everything - it never happened that we would not fit a doorway... it's really compact for a full-size double. My children are on the smaller side, so they fit well, but it's true that the seats are not the most spacious, so large toddlers could be difficult to fit comfortably. The folding is also very nice.
The maneuverability is good - I can do it one-handedly, but a full turn needs both of my hands. Off-road means quite some work while pushing, but that's how it works when you push two children's weight. The most I mind the hoods, however - they look creased, which I am not that fond of.