R.W.
Hi, I just purchased a double stroller this past summer...we have two little boys and a 7 year old girl.
I bought the Mountain Buggy...the "urban" version. I absolutely love it and it came highly rated by baby bargains. What I love about it is how versatile and easy to manuever. It easily fits through standard doorways (this is a side by side stroller) and folds easily once you figure out how to do it.
It has "real" wheels so you can also use it to go on walks or to the park...it can withstand a little off-roading. Also, it is SO easy to go and down curbs.
Also, holds up to 120lbs...so even my daughter can ride in it if she gets tired. You can also purchase a ton of cool accessories for it.
I think they have a website...
The company is Mountain Buggy, based in New Zealand. Not too many stores carry it, I think the high price scares people away...but I will tell you this is a GREAT stroller.
Good luck!