As a stay-at-home dad who likes taking his son on lots of walks around the neighborhood, having a good stroller is important to me. The 2014-model Britax B-Agile is one of the better options out there, for several reasons:

• It's surprisingly lightweight for its size.
• You can fold it one-handed. After the kid is out, just push the safety button on the side and pull the handle located in the seat. The B-Agile can then be carried by that handle like a suitcase.
• Tight turn radius. Just as important for strollers as it is for cars.
• One-foot braking system, so there's no forgetting to engage one or the other.

The B-Agile is currently $216 on Amazon, though I've seen it lower than that in the past (around $190, I believe). Even so, it's a good deal for the quality you get in return.