Hi, Hope2B --First question, what do you want from your AmEx, other than to be an AmEx?
--revolve vs PIF
--cash rewards vs points rewards
--travel benefits?
--shopping benefits?
I think that part of what you're asking is "What will a 705 get me", but there are so many different cards that you might want to figure out what matches you, instead of what do you match.
The have a nice card comparison function, but it doesn't work on Firefox. Go to americanexpress.com (on Internet Explorer) and try the compare card function.
And now I'll get out of the way for those who know about the scores!

good luck
* Credit is a wonderful servant, but a terrible master. * Who's the boss --you or your credit?
FICO's: EQ 781 - TU 793 - EX 779 (from PSECU) - Done credit hunting; having fun with credit gardening. - EQ 590 on 5/14/2007