Kind of depends on whether you want a "baby bucket" that snaps in and out of a base for the infant stage, or a convertible that is rear facing for the baby/toddler stage and then forward facing till the kid is ready for a booster. Good "baby buckets" I have heard of are:
Chicco Keyfit or Graco Snugride
Good convertibles that can work well from birth I have heard of are:
First Years Truefit
Sunshine Kids Radian
I am sure others have more suggestions to add. We are going with a Graco Snugride for the infant stage, since my friend gave me hers (someone I trust who has NOT been in an accident), and then I am thinking we will go with a Radian till she is old enough for a booster. My other two are in a high back Graco Turbobooster (7 year old DS), and Britax Decathlon just turned forward facing (4 year old DD), and the Radian is pretty narrow as well as long lasting, so will help me fit 3 across the back seat of our car well.