Congratulations Mouser and soon to be Mrs Mouser! Best wishes for the ceremony/big day and all the best for your future life together.

Thanks for good ideas. My REAL password actually involves part of a friend's car number plate, which she USED to own (how paranoid is that?)
 What's now making my head spin tho, is that without a priori knowledge, isn't my passPHRASE actually a passWORD? (I hear Baynes calling). I see on various sites, entropy levels are different.
And Mouser, without knowing brute force passphrase cracking methodology, would having the mis-spelling early in the "pass-phrase" improve things?
This is all academic really but I'm interested - I've taken all the suggestions onboard thanks.

AOMEI Pro Backupper ... free for 8 more hours from "now" at http://sharewareonsale.com/s/aomei-backupper-pro-freebie-sale
Main pro advantage seems to be clone image ability