Hi G.,
Most jogging strollers accomodate children up to 50 lbs. and are a dream to push. If you get one of the ones with the swivel wheel in front, they fold more compactly, and you can even remove the wheels easily on most of them. They're not great for getting through narrow store aisles in a mall, but they're great for everything else. The In-step/schwinn brands are less expensive than the other brands, but my instep has lasted me through about 7 years and at least 3 kids. We have 6 kids, soon to be 7, and have been through several strollers. the joggers are by far my favorite. We also have a Peg Perego Pliko that is smaller, and has a toddler step on the back, too. But I'm not sure what the weight limit is on that. Check out Ebay to get great strollers, even brand new, for a fraction of what you'd pay elsewhere. Good luck.