Aside from the general chaos factor, having a second baby presents a transport issue, particularly if your first still requires periodic strolling.
A mama friend gives major kudos to the Valco Runabout Tri Mode stroller ($425 at BabyCenter shipping is free, a rain/wind shield is included). Cool looking and compact, the Valco three-wheel all-terrain stroller offers full recline for infants, and toddlers will love the royal perspective from the toddler attachment seat ($40). If you like the look of a pram, a bassinet attachment ($150) also is available.
The height-adjustable handles make this stroller a good find for couples with a substantial height differential. Open dimensions: 36"L x 26"W x 40"H; folded: 32"L x 26"W x 16"H; weight: 25 lbs. Suitable from birth to 50 lbs.