Major Purchases: Infant, Evenflo

Britax Boulevard, Marathon or Evenflo Symphony for Toddler?

Hi moms! My 2 year old son has gotten too big for our Evenflo Triumph XL Convertible. Plus we're expecting baby #2 and need a new car seat anyway. We're tyring to choose between the Boulevard, Marathon and Symphony. I've read lots of great things about the Britax brand and would love to try it. But here are the issues: - Boy is very tall for his age. He grows up fast and even pediatrician says he is taller than most kids his age (people who see him think he is 3). So we want a car seat that will last him longer. - We own a...