We won’t have a full review on these carseats, mostly because they are pretty similar to existing models.
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.
Hi Larissa,
In terms of comfort, it is about the same as the original Graco Turbo booster. Like many backless boosters, there is not a lot of comfort padding.
I wondered how comfortable the Grayco Colorz are. Do you have any comment on that? Thanks for the review!
see, I didn’t know they were interchangeable, since current turbos don’t usually come with the smaller cover like that… I know they used to come on some of the older ones… that’s good to know… really inexpensive way to have an extra cover for when you wash or to change things up, especially for the boys!
The covers are also interchangeable with current Turbos, so if you have a Turbo in use and it gets dirty or nasty, you can just go and buy another of these fun colors and replace it.