Money: Toddler, Graco Safeseat

Chicco KeyFit 30 vs Graco SafeSeat or SnugRide32

I am exhausted from researching travel systems! any input on these 2 systems would be appreciated! I am really having a tough time making a decision. They seem quite similar, although there is about a $70 price diff. (chicco more expensive). I like one of the KeyFit patterns better than the available Graco patterns, but what really makes up the price diff? Also, I can't find the specs on the Chicco as to how much the car seat & stroller weigh. Any other things to consider? Sorry, I know there's so much info. out there - I've waded through...