Mom SOS: Britax Chaperone or Chicco Keyfit 30 Infant Car Seat?

I’ve always had my heart set on the Britax Chaperone  because I love the no re-thread harness and I like the idea of the rebound bar and the extra head wings as an added side-impact protection. However, as I was reading more car seat safety research, the Chicco KeyFit 30 also always came in the top 3 for safety and ease of use. Moms rave about its ease of installation and they say that it’s lightweight.

So now I’m debating between the two. They are both rated really high for safety but the Britax just looks more safe - has more foam padding and has the extra safety bar that other car seats don’t. However, it’s heavy and because of the rebound bar, the base is really huge and I hear people complain that it doesn’t fit well in all cars and SUVs.

Any thoughts on which one is better and why? Any issues with either? If you have any experience with either one please let me know.