Best double strollers? 2 under 2! Help!

Cambria

So I'm having my 4th in November. Our 3rd will be 15 months old. (We also have a 9 and 13 year old). I've been looking into graco options and the contours elite tandem strollers. Any opinions? The graco duo seems to have many bad review and is quiet heavy. Also size of child was a complaint. My son now is 32in and 30 lbs so big and tall boy.