The Graco Extend2Fit 3-in-1 wins for most families needing extended use, with 65 lb rear-facing capacity and booster mode up to 100 lbs per Graco specs, versus Chicco's 35 lb infant limit. Chicco excels in portability at 9.5 lbs with quick Zip cover per Chicco documentation. These serve different stages: infant-only versus multi-year convertible.