Chicco KeyFit vs Britax Chaperone

[chi_s]

Which would you pick??

The Chicco is nice because it is lighter than the Chaperone and it has great safety ratings. The Chaperone, on the other hand, is a bit heavier and more expensive BUT it has true side-impact technology and the anti-rebound bar. Just those two features sold me on the Chaperone, but is it worth the money?

(Also, I think my SUV will be able to fit the large Chaperone, so size doesn't matter.)

Opinions?

[Joolsplus2]

I like the Key Fit... lighter, easier to install... I like rebound protection later for much larger rearfacing toddlers, though, so Britax is great when you're using a convertible, and any rearfacing seat with deep sides lined with EPS foam will have excellent side impact protection, so the Key Fit definitely has good SIP, even though they don't put flashy labels on it like Britax does.
Really, either one is fine :)