We ended up choosing
Graco travel system. They have many
different stroller options (from single to double to jogging strollers)
The car seat clicks securly into a base that stays in the car, and is easily removed and clicked securly onto the stroller. They have a nice interactive
demo of how the product works...
We bought a second base, so we would have one in both cars. Once the baby is out of the small car seat, you still have a nice stroller.