Hi, through some stars aligning/good luck, I have a choice of either being a companion for a long term Delta employee or an AA employee, but am not sure which would be best. I am located in DTW, so obviously Delta has more flights out, but no zed fares. I will be flying internationally quite a bit and depending on availability, would pay for business/first on AA..{as opposed to free econ that aa offers.} any advice or things to consider would be appreciated. Thanks in advance.