I'm in my first trimester and starting to research all the gear we'll need for our first baby, with the hope that it'll help us set a budget.

So - there seems to be a LOT of different types of strollers out there, including:

1. Stroller base for infant car seat
2. Standard stroller
3. Umbrella stroller
4. Jogging stroller
5. Travel system with car seat

To all the experienced moms out there, how many strollers did you get or which ones did you find to be the most useful to get you through the first two years?

I'm thinking of the Britax travel system (stroller with carseat) and the Snap-n-Go stroller base and hoping that they would be enough...but then I like the idea of a lightweight umbrella stroller since we live in a 3rd floor apartment in the city.

Your suggestions welcome!