It all depends on your usage and terrain, and if you go to a good baby store they will ask you the right questions. I thought I had my stroller picked out since my baby could not stand the sun so I wanted one whose handle switched so in both directions she could sit in the shade. I also wanted one that could go on a dirt road. And I liked it if a bigger child could stand on a step. Well, the sales lady pointed out that if I want all terrain walking (I travel to Europe and live on a dirt road) and want my child to be able to lay down first and later sit in a traditional seat then I needed the Emaljunga. It was the best decision I ever made. However, it is WAY too heavy for jogging. When baby #2 arrived I bought a jogging double stroller - easy on all terrain, great big canopy, big rain cover and bug net to go over it all to give both kids a nice little private and cozy cubbie, but it was too huge to go into my trunk without removing the wheels (and I got the quick-release wheels, no tools needed).
So decide where and when you will use it, what comfort you want for your child, what features and accessories you want (cup holders for kids and mom, big basket underneath or not, matching stroller bag, place for your keys and mp3 player, optional all weather cover and leg cover, mosquito netting, pads in the seat for infants, etc) and you may find you might need one to keep in the garage for the jogs and long walks, and another in the car for smooth rides in the mall.
Oh, and if you have 2 kids in it, make sure both seats recline independently. One may want to sleep while the other one sits up. Same with the hoods, although my kids liked the big single hood.