LOVE our Chicco KeyFits. I bought one in 20008 for my son and let someone borrow it when he went into a big boy Britax seat. Then bought another one for my daughter in 2010. They are amazing for safety, durability, ease of use, easy to clean, comfort features. The only drawback is that they do not mount to the front of many shopping carts. That wasn't a problem for us since I wear her in a front carrier when she is small and we have a big grocery shopping trip and for quick trips I just set it in the basket portion of the cart . . . it is mush safer anyway. We use ours every day and switch it between vehicles often--never had any problems with either one. They really are incredible seats. Love that the cushions are all removable so it can be customized for tiny newborns ups to 30lbs. We took out the infant seat cushion about 3 months ago due to lil girls size but still use the infant head cushion and will until her head is big enough to not "bounce between the sides" without it.
We are using ours with the Chicco Together Stroller (Tandem 2 seater) so my 2 year old can ride too :0) Another AWESOME product!
•KeyFit 30 Infant Car Seat, #1 Rated Infant Car Seat in America!
•Secures baby from 4 to 30 lbs
•Energy-absorbing foam for improved side-impact protection
•Removable newborn inserts for smaller babies
•Thickly cushioned seat pad and five-point harness for maximum comfort
•Spring-assisted level foot, bubble levels, and “Center-Pull” adjustment for easiest installation
•Compatible with the Chicco Ct. 0.1, Cortina, Trevi, Together and S3 strollers