Hi C., I have a 3 yr old and an almost 2 yr old. I research strollers like crazy when I was searching for dual strollers and I made sure I tried them out (with kids in the stroller) before purchasing. The one I settled on was the Combi Counterpart, because I have not found a perfect duel stroller yet.
Positives are: it's compact, light weight (enough for me to lift into the back of a SUV), and can fit through mall ailes.
Negatives: it does not turn on a dime, but for the price, it's not bad, and the one cup holder broke off.
Last weekend, we took the kids to Disneyland and tried out the stroller, it was great because my daughter was able to sleep in the back while my son sat in the front. Also, I was able to weave it in and out of the crowd. Good luck!