I have already transferred many miles into AAdvantage from Amex MR via TWA.

I keep wondering if I should transfer them all before the deadline [7/3?]?

I guess I have kept some points in Amex MR in order to not put all my eggs in one basket. Even though I travel almost always on American, I have traveled in Delta and Continental through MR points.

In some ways MR points offer you more flexibility, however, I live in Dallas where American is king.

Any thoughts?