I ADORED my Chico KeyFit 30. I cannot say enough about it, except do not choose a print with the shiny fabric (I hear it holds heat). It was well worth the investment. My daughter is 18 months old and still rides in it in our second car!!!! I splurged on the travel system and the stroller is really good, too. Like any big stroller, it is bulky, but I don't mind, and I can fold it out with one hand.
I passed on Graco SnugRide b/c they did not have the between-the-legs adjustment strap. In the 7 yrs since I had my last one, they got cheap and took it out of all but 1-2 top models. It was a favorite feature of mine.
you cannot go wrong with Chicco and it will resell like hotcakes!
goodluck!