Original Member and FlyerTalk Evangelist
Join Date: May 1998
Location: Kansas City, MO, USA
Programs: DL PM/MM, AA ExPlat, Hyatt Glob, HH Dia, National ECE, Hertz PC
Posts: 16,619
Absolutely, by keeping them in AMEX you can wait until you need them for any of the programs that participate ... or you can at least wait for a promo to get a bonus for transferring (such as the 20% bonus US Airways recently offered).