Re: Help! which one to buy for older harnessed child?
Actually the Harmony Defender goes up to 57" harness just like Frontier does. But, the weight limit is lower and it's 57" in booster mode too vs the 65" on the Frontier. If space and money were not issues, I'd go with a Frontier though, my sister just bought two of these for her K-ers and they are very nice car seats.