B.S.
I've done quite a bit of traveling, as all of our family is on the west coast. We have the Britax Marathon, but I have never taken it with me due to the size and expense. My friend had her's broken once and they would not replace it. So, for traveling I bought a cheap Cosco carseat, I think it was about $45. We then installed it in my husbands car and he occasionally uses it with our son. To me, it was worth it because if it gets broken while traveling, you are only out a couple of bucks instead of $300 or so. Also, i have heard that if you have the bigger version, like the Decathalon that they will not fit in the airline seats.