Recs.
Updated
The Peg Perego Book for Two is an expensive side-by-side stroller packed in features. It can work with other Peg Perego products and since it has a narrow footprint, it can fit anywhere with ease.
SpecsUpdate
Pros
Pro Easy to maneuver, thanks to the single handlebar
Unlike most strollers (mostly umbrella) that have 3 handles, the Book for Two only has a single bar that you can push anywhere on. This helps you adjust where you need to push, depending on where the heavier child is seated. If your heavier child is on the right, you can push the stroller on the right side of the handlebar where the weight is closer to.
Pro Has a big storage compartment so you can bring more of your things
You would not need to hand carry your things and you can focus on steering the stroller with your both hands. There is an ample storage space in the basket at the bottom of the seat and two mesh pockets at the back of each seat.
Pro You can use this stroller with car seats
The Book for Two is a travel system, which means it is compatible to work with other baby travel products, particularly the Primo Viaggio car seats, with the use of connectors. A standing board can also be attached to the back part of the frame for an older child to ride-along.
Cons
Con Hard to check in on your child since the peek-a-boo window is plastic and placed at the 2nd panel
Peek-a-boo windows are used to check in on your child without needing to go in front of the stroller. Most windows are made of a mesh fabric which contributes to good air flow but the Book For Two has a hard plastic cover that not only glares under the sun but also doesn't allow air to pass through. Also, it is placed on the 2nd panel of the canopy which is not easily accessible unless you are tall. You would have to hide or fold one panel in order to see through the window.