Your use is going to help determine that. A jogging stroller is going to cost you more than a umbrella stroller.
Personally, I wish I had bought the City Select with DD1 and then just got the extra seat for this baby, but I'm not ready to drop $700 on a stroller right now. Plus, we live in the country/suburbs-ish so we don't use it as often as someone in the city.
I have a Maclaren Quest that is a nice umbrella stroller. It folds up tiny, so it's great to keep in my car all the time and I don't have to worry about removing it to fit groceries or anything. It has an almost full recline, so you can use it when the LO is fairly young.