I, too, am earning the bonus in AA and BA. The BA account is brand new, and I don't care to add many more miles there (for one thing, I'll be 1K on United). So my total BA account will be ~103,500 including (measly!) actual flight miles.
BA offers at 110,000 an award of Concorde one direction, business class return. Since I've always wanted to fly the Concorde (despite the recent thread alleging that it's old and cramped), that's a no-brainer in my book. In fact, my first BA credit was 7,000 miles from Diners Club, dated 9/28 while they were giving double credit! Now to plan when next spring I want to fly...