I have a Contours Optima stroller and do like it. It handles really well and is easy to maneuver. I dislike that it's so heavy. I have only used it on the sidewalk so I'm not sure about "off roading."
I have the new LT one. I've only been using it for about a week, but I like it. It handles well, and we are able to put the newborn in it when the seat is tilted all the way back and the toddler is in the front, so we actually havent used the carseat adapter yet. Its supposedly the lightest one - it still feels kind of heavy to me, but it IS a double stroller, and I dont have anything to compare to. We have also only used it on the sidewalk/street, but I can't imagine it would be great on any rough terrain.
I have the red one...I know it's not the newest model out. I like it and it will fit your infant seat. The adapter that comes with it fits just about any infant seat. It's easy to push one handed and I've pushed it in the grass and it did alright. What I don't like, on this model, in order to fold it up, you must remove one seat and flip the other one to face the handle bar. So in the rain with screaming kids in the car, it's not so great! It's also a bit heavy, but I think most double front/back are heavy.
We became A "Forever Family" on February 21,2011. Exactly 1 year from the day we began our adoption journey! Baby Girl joined our family October 5, 2011 we will be finalizing her adoption soon! And now after 7 years of infertility here I am pregnant with our third child! Due to arrive October 7, 2012!
Re: Contours double stroller