Quoting Riley+3:" I'm looking at variations of double strollers. I've basically narrowed it down to Graco, Combi, and Chicco. ... [snip!] ... have a Combi infant seat, do you like it? What does the bar in the front do? Any other recommendations welcome. =) TIA. =)"
Graco makes a wonderful double stroller that allows for the infant carrier to lock into the back seat, while the toddler can sit in the front. I'm not sure if you can combine different brands (say, a Cosco carrier with a Graco stroller), but I know that Graco is amazing for strollers. I personally am getting a sit-n-stand, because my toddler will be 2, and I know that the infant carriers lock into these as well, but I'm sure you will find somethign that works best for you. Good luck!