Thanks to everyone for the useful info and advice. Unfortunately, I'm no less uncertain than b4!
My primary concern is comfort; free flights are unimportant to me as is theoretical "status"; so upgrades, comfort (and service)in coach (when I can't get upgrade!) and access to comfortable lounges are most important to me.
To date, most of my travel has been to Asia and Middle East, occasional weekends in Europe, but in light of recent events I'm thinking more North and South America, maybe South Africa and occasional weekends in Europe.
Any further advice? I know I need to make up my own mind, but good advice never does any harm. Do you think it would be worthwhile holding off to early next year when benefits are confirmed for 2002?