I've been searching for a safe child seat for my tall toddler. The Safety 1st Solo has good safety ratings and is narrower than many so will fit most vehicles. It is suitable for 1-8 year olds. Typically $190-$200 but price has been dropping this week on 3xCamel, and as it's over $39 delivery is free.
The Safety 1st Apex AP is also dropping in price at $113.10 currently.
As these are in the baby category on Amazon I believe CR and SB is 0%. Won't hurt to try if buying
Not a harnessed booster