(This is part of my response to another mom who asked about bike trailers vs joggin strollers. but it should give you an idea of some of the features you'll want to look for and some to avoid.)
We went through maybe a dozen strollers of all kinds before I finally landed on a jogging stroller. The one I have has several drawbacks- the bar in front does not lift up and over to one side so you can easily put your child in and out. It is a stationary bar, and now that my son is 25 lbs, it is hard for me to maneuver him in and out of the thing with that bar in the way. I'd try hard to find one where it won't be a pain to get your child in and out when they are older. - the cup holders up at the top where I am are never the right size no matter what cup or water bottle I put i there. The cup either won't fit or it it falls out when we go over a bump. Look for one with deep cup holders. - The front wheel wobbles a lot. Doesn't seem to hurt anything, but it annoyed me until I got used to the sound and feel of it. -Like every other stroller I've ever seen, it does not offer adequate sun shade.
What I do like about my jogging stroller - the shade has a plastic peek-through window, so I can see my son whenever I want, and fold the window cover over the window to help keep sun off of him. -The handle is adjustable which is great for all the hills we have here. -It has a safety harness that adjusts from pretty small to pretty big. -It has a snack tray for my son, and a small snack tray up top for me. -It has good under-seat storage, and a small storage pouch higher up. -Heavy duty material and velcro closures. - Easy to maneuver, even one-handed.