Is it a necessity?
DS will be just over 2.5 when LO #2 arrives. We live in the burbs and use strollers mostly for the mall, zoo, vacation/travel, etc. We live in cold weather climate, but int he warmer months, DS rides his trike or likes to walk a lot when we're outside.
I don't think a double stroller is going to get much use in our household. When did your older child outgrow the stroller? Do you think a double stroller is a necessity?