As for selecting the most appropriate stroller(s), start with the basics. How large is your child? For how long does she need additional support and padding around her neck and head? Should be lying flat into a bassinet? Could she feed herself from a tray yet? And so forth. Start by thinking about your child's size, needs, and skills, in other words.
Next, consider the types of actions you see yourself and your kid sharing. If you're an avid runner, then a jogging stroller is a great idea. If you are always off and on trains or subways, then an extra lightweight and compact folding stroller is a necessity. If you plan to bring your child with you on all of your errands, then look for extra storage capability underneath the stroller. And in case you'll be in and out of your car all of the time, make sure your stroller and car seats are compatible.
For your record, you are not likely to find some tandem/double strollers listed here. That's not because I do not like double strollers or because many good types exist, but is simply because many brands that produce a nice single stroller also supply double/tandem units. If you're partial to a new or sold by some of the points here, take a look at their multi-kid options.
Ultimately, attempt to find the simple fact that you likely need two strollers as a chance, not a weight -- though it's a chance requiring more outlay of cash. While an umbrella stroller is wonderful for afternoons in the city, it's useless for running on a course. Similarly, a jogging stroller is great for a morning trot through the suburbs, but also a bad option for surfing the narrow aisles of a shop or even for carrying on the subway. If storage space or space constrains you to one desk, then just be certain you find one that's flexible.