My kids loved the City Mini Double stroller
To rent a stroller simple visit www.Kingdomstrollers.com and choose which stroller you would prefer then click 'reserve this item'. They have single Bob strollers, double Bob strollers and they also have City Mini strollers. These strollers are very easy to push for the many miles you will be walking at Disney World. Best of all they are super comfortable for your children. The seats recline back for napping and they have a huge canopy to protect children from the bright Florida sun and rain showers that are known to pop up out of nowhere.
Renting online is so simple. Visit their website, click 'reserve item' and then choose your dates on the calendar that you will need the stroller. Pick the resort you will be staying at and you are all set.
I would highly recommend renting from Kingdom Strollers on your next Orlando vacation.