There are several types of strollers. Some are designed for specialized use, such as joggers and lightweight strollers, others are intended for more everyday use. Irrespective of the sort of stroller you are purchasing, here are some considerations to look at before you buy your new stroller.
Make absolutely sure the stroller comes equipped with a appropriate, and effective, restraint system. Look for a three-point seatbelt that goes around the waist and comes up between the legs. The buckle should be comfortable against your child. If you are looking for a jogging stroller, make sure you get a five-point restraint system (shoulder straps) since running will result in your child being bounced around. The shoulder belts must keep them in place comfortably even when jogging.
Be sure the stroller has a brake. For most casual strollers, this will just be a brake to use when you are parking the stroller. Make sure it works reliably and is easy to use. For joggers, you should also insist on a brake that can be used to brake the stroller while it is being used. Be certain that the brake is easy to operate and that you can lock the tire(s) without too much...