Easy to assemble.
Easy to fold and unfold.
Storage shelf under stroller holds good-size medium diaper bag.
Comes with foot muff.
Good maneuverability - just tilt forward to balance on front swivel wheels and you can do a 180 degree turn on the spot!
Handle easy to rotate so your little one can sit facing you - very important for babies and younger children to feel secure.
Harness simple to secure.
The B&W photos in the assembly instructions aren't always helpful - sometimes clear line diagrams are better!
The parents cup holder attaches on the side of the pushing handle, not the back, This means it sits outside the normal frame width. I kept forgetting to account for this extra width and the cup holder would be run into doors, window frames and people. :-(
Wheels don't deal well with raised bits of snow or sand on the pavement. A high bump in the path or an uneven or abrupt transition to an incline will stop the stroller dead, so you need to be very alert to raising the front wheel up slightly for these obstacles. Not a huge problem, but the need to be constantly vigilant in observing the minor state of the road is annoying.
The Flyer has all of the features I have been looking for (I've done a lot of internet research). Love the reversible handle, love how upright the seat goes, but that you can also lay it flat for naps. Not as smooth a ride as my Baby Jogger City Elite, but it doesn't have air tires, so I was expecting that. Easy to fold, easy to use the carseat adaptor. Works exactly as I'd hoped.