We cancelled a15k coach round trip.

After being a Delta and United followers for decades, AA offerred platinum status for free in a mailing after just booking a single coach segment JFK to LHR in 2014. Whoever devised that offer was brilliant because AA got lion share of biz travel for next 7 years. Delta miles kept coming with Amex spending.

Due to their value, we ditched the AMEX card for daily purchases for AA advantage card because mile for mile, AA miles are far more valuable and easy to use at anytime year round and have RT deals to SXM such this post. Rare that Delta ever does.