We've been researching "big girl" car seats for my granddaughter since she was born! She's 8 mos old and very petite, but is sitting and standing so it was time to make the switch. This thing is perfect! It's sturdy, easy to install, and she is so happy in it! It fits, rear facing, great in the back middle of my daughter's small sedan (Ford 500), and we have not noticed any of the rattling noises that others have complained of. It's easy to install, so moving it into my car is a breeze. It is a bit heavy, but that's to be expected!