i kept my bugaboo when I had DS. I got the buggy board attachment. Easy to push with DD standing and DS in the bassinet. Now, DS is almost a year and is still easy to push. DD also learned to sit on the board if she was tired. DD and and DS are two and a half years apart. Very convenient this past summer when we went to the beach a lot as well.
Friends of mine have the city select and LOVE it. Love the way it pushes and the way the kids sit in it. Other friends have the UB Vista with the rumble seat and never use it. Have said it's cumbersome to push.