Conclusion: The major advantages far outweigh the few minor disadvantages I listed. The Frontier is a great choice if your “baby” is already a big toddler! It fills a nice niche between models like the Britax Boulevard and the Britax Regent. Choose a model like the Decathlon or Boulevard if your child still is under 2 years old and 25 pounds. Older babies should still be rear-facing for safety.