The Graco Argos 70 (and Argos Elite 70) are similar to the Graco Nautilus/Elite models. The Argos offers slightly increased weight limits and a front-adjustable harness height system. This is a great feature, not found on some competitive combination models. You can find our review of the similar Nautilus Elite.
The Graco Turbo Colorz is a basic backless Graco Turbobooster. It is currently a Target exclusive, sold without a cover in 4 colors for around $19.99. You then buy one or more of 10 covers separately at $5.99 each to let your child create their own booster! It’s a great way to promote booster use.