Are you looking at electric or non-electric models? Both could work okay, although if you're looking at non electric, the Bullitt might have a slight edge in geometry for hilly rides and touring. However, in order to comfortably carry two kids or kids and a dog in the Bullitt, you'll probably have to fabricate your own front box/cargo area solution, as it's platform is fairly narrow and the stock solutions are made mostly to conform to the platform width. The Douze has much better standard options for carrying multiple kids or kids plus other stuff. I really like the modular nature of the Douze for the option of putting inside a vehicle.
Another option to consider is Cetma. Hand built steel from Oregon. Good geometry for hilly climbs, and the platform is a good size for kids plus stuff. Also separates in half to carry in your vehicle, if that is a feature that interests you. However, no elegant e-solution if that is what you're shopping for.