Britax Highpoint vs. Diono Radian 3RXT Safe+: Which is Better? (2024)

Hi there! We're here to help you decide between the Britax Highpoint and the Diono Radian 3RXT Safe+.

Our goal is to provide you with the information you need to feel confident that you're choosing the optimal car seat for your family's needs and budget. Let us know if you have any other questions!

At A Glance

Our Thoughts

When it comes to choosing a car seat for your child, safety, convenience, and comfort are top priorities. The Britax Highpoint and the Diono Radian 3RXT SafePlus are two options that provide robust safety features and are highly rated by parents.

The Britax Highpoint, a 2-stage belt-positioning booster seat designed for older children transitioning out of a 5-point harness car seat, is known for its high safety standards. It features multiple layers of side impact protection, color-coded belt paths for intuitive seat belt routing, and SecureGuard Clip ensuring proper seat belt positioning, which add to your peace of mind while driving. However, thanks to the seat's fit and easy-to-remove machine washable cover, users also tend to appreciate its overall convenience and practicality. It's important to note that while this model doesn't necessarily provide a slim design like the Diono Radian 3RXT SafePlus, it doesn't take up an excessive amount of space in the vehicle.

On the other hand, the Diono Radian 3RXT SafePlus is an all-in-one convertible car seat that assures safety not just through a steel-reinforced frame and EPS foam for side-impact protection, but also via its sturdy 5-point harness system. Parents also love the convenience of a 12-position adjustable headrest and machine-washable cover. Interestingly, this car seat shines in its slim-fit design that can fit up to three car seats in a row—making it an ideal choice for parents with multiple children. One important drawback to consider is the challenge in the installation and reassembly of the seat, particularly after washing the seat cover, as indicated by some users.

Both models can accommodate a child up to 120 pounds in booster mode, showing the long-term usability of these seats. Also, they are made from reinforced steel, promising durability. They are, however, not FAA approved for use as a high back or backless booster, which could be a factor for frequent flyers.

As a parent, if the ease of installation and an easy-to-clean design are what you're looking for, and you don't need to install multiple car seats in your vehicle, the Britax Highpoint may be right for you. However, if you have multiple children or a smaller vehicle and never falter on having comprehensive safety features, despite the car seat being a bit challenging to install or adjust, the Diono Radian 3RXT SafePlus could be a worthy investment.