Wow!
Thanks for the suggestions all - and keep them coming! Some very promising ideas, I'll definitely look into all of them.
Seely: you make a very compelling case for the Japanese makes. I'll look into them.
Maxturbo: while a very handsome bike, it comes at a very 'handsome' weight as well - not exactly what I had in mind...
Bbattle: I had something like this in mind:
http://jokeisup.com/bicycles-scooter...-vis-5-cranks/ . I've never used a wide range double like this, but it is an alluring setup. If anyone has personal experience, I'd be interested in what you have to say!
Aaron: You have a very negative view of the Raleigh International, contrary to many that I've read. Would you care to explain more of what you don't like about it? I'd be interested to know.
And to everyone who suggested older Treks: I had a prejudice against these (for silly reasons, as prejudice are wont to be) but I will definitely take a second look, particularly on the number of recommendations for them.
Thanks again all, and looking forward to more suggestions!
Thomas