With DS I had an Evenflo Infant car seat and stroller. It was really nice and I loved that the car seat snapped into the stroller, and was easy to carry around.

With DD I am thinking about getting the infant car seat that goes with my jogging stroller.

http://www.target.com/p/Baby-Trend-Flex-Loc-Infant-Car-Seat-Grey-Mist/-/A-13248524

What car seat are you thinking about going with?