I don't think we need to buy anything for this new baby except a double stroller. We'll probably sell the two that we have (Chicco travel system and the Maclaren XT) and use the funds for the double stroller. These are the two that I'm thinking about. I tested them out in the store and both seem great. We just need to test them out with Gustav.
City Mini Double:
Pros - easy to fold, lightweight, fits through standard doors, cheaper than the other one, adapter for baby carrier, standing board
Cons - small storage basket
Cons - small storage basket
City Select:
Pros - 16 seating combinations, large storage, hand operated brake, baby carrier adapter, standing board
Cons - expensive, heavier than other
Cons - expensive, heavier than other