I have the Adventure Buggy Company (ABC) Twin Everest with add-on toddler seat and love that for moving 3 around. It is easy to take the toddler seat off (it just slides right off) and is very sturdy. The toddler sits on top and so gets a little well-needed mommy time. It's about the same size as a Mountain Buggy Urban Double (MBUD) but the MBUD won't take a toddler seat.
The only think I don't like about the ABC stroller is how heavy it is. And how bulky it is to pick up and put in a car. Other than that, it's a very sturdy, well- built stroller with exceptional customer service.
I forgot to add that for my twins, I now use the Snap and Go double. There is just nothing easier than that stroller. I will be sad to give it up when my twins outgrow their Graco Safeseats because it just makes little trips and small errands so much easier.
" I object to violence because when it appears to do good, the good is only temporary; the evil it does is permanent." Mahatma Gandhi
"This is the ultimate weakness of violence: It multiplies evil and violence in the universe. It doesn't solve any problems." Martin Luther King, Jr.