Originally Posted by
redtop43
... MR's "primary" transfer partner is Delta, ...
Originally Posted by
drewguy
Given how many MR points you have with Amex, which means Delta, ....
This is an interesting perception because Membership Rewards has transfer partners in all three alliances, and in this (unscientific) poll British Airways is actually used more often than Delta:
http://www.flyertalk.com/forum/ameri...-partners.html