I LOVE my city mini double stroller by baby jogger. It's pretty light compared to most of the double strollers, folds up small and easy, and fits through a standard doorway. My son was 28 months when my second son was born and he was and still is VERY active. I knew the sit and stand wouldn't work for me b/c he needed to be strapped into a stroller. I did two things to make this stroller work for me. First, I bought a car seat replacement clip and added it to the stroller harness so it created a 5-point harness for my 2 year old--otherwise he was squirming out of the straps. Second, I purchased the belly bar. This was a lot cheaper than the car seat adapter and works great for strolling around stores (I wouldn't suggest jogging with it like that). I secure my youngest son's car seat to the stroller/belly bar by pulling the straps up from the back of the stroller seat and wrapping them into the seatbelt grooves of the car seat. Make sure the stroller straps are tight and the car seat stays in place. I liked this option better for my 2 year old as well. With the infant carrier adapter, the other seat can't have a snack tray and a snack tray was essential for keeping my 2 year old at bay while we were shopping :) The other thing I do is put a kidopotamus snuggli in the baby's seat and he can lay down or sit up very comfortably. If you have any questions, please feel free to contact me. I searched high and low for the right double stroller and I'm really happy with my purchase. I looked at the city elite and thought it was just too big. It was a lot heavier and didn't fold up as compactly as the mini (when the mini is folded, I can fit it behind the third row seat of my suv, I couldn't fit the elite). I noticed last time I was in buy buy baby that baby jogger has come out with another double stroller - the elite. Looked really nice. Super pricey and a lot heavier than the mini, but definitely seemed to have a lot more options. Congratulations on your growing family and good luck!