Thanks Ted,
I had sifted through doing a search on each bike and there was no clear winner - and even the Royal Enfield dealer looked at me like I needed locking up when I told him what I wanted to use the bike for, which tells me all I need to know about the Enfields suitability
If it will drag out any more opinions the answers to your questions are....
1. About 5'9 / 190cm
2. Professional road rider, off road experience limited, and a long time ago
3. Fit, no health issues
4. No problems with daily maintenance, routine servicing, but bleeding brakes, changing tyres,carb set up, timing, and anything internal would need to be passed over to somebody more adept, or taken very slowly and (haynes/clymer) step by step
5. Budget of around £2500 for a servicable bike - to this I can add necessary spares, better tyres, touring essentials as needed
6. 1 up - looking to put luggage where the pillion would be
7. Not a brandname slave or taken in by advertising, otherwise it'd be an easy choice, I'd just have to pick my favourite BMW colour