L.R.
I really love my Baby Jogger City Series double stroller. I spent months researching and finally settled on this for a few reasons. 1) It had the largest capacity for kids. I have a very tall daughter, and this model was the only one that her head could fit under the canopy. 2) It is constructed to fit through all doors, and has let me in and out of stores, hotel rooms, etc. with no issue. 3) It has independent canopies that completely rotate to protect the kids in the sun. 4) The folding mechanism is so superbly easy! One pull on strap in the middle of the seats, and it folds in half. 5) It has a dual swivel wheel in front that can be locked with the flip of a switch, which makes it the only stroller I need, in town or off road. 6) A big last thing...the seats have a separator in between them so there's no grabby/pinchy action happening between the siblings.
I also should mention that it has a very smooth ride, and my kids love it! Good luck with whatever you choose!