In reply to Phil1919:
Decide what you want to use it for and buy accordingly. If you will be touring with tent etc then a tourer is probably the way to go. If you want a comfy road bike then an 'audax' bike would be preferable. A surf and possibly a post on some cycling forums would be an idea.
FWIW, I have a full on tourer and I also have a Thorn Audax Mk3 which I'm going to sell as soon as I've finished building my roadie. The Thorn is in many ways a great bike but not very good as a tourer unless you go credit card style with minimal luggage. As someone said above a crosser might be a good option so long as you go for a modern crosser style bike rather than a proper crosser which will be twitchy and will have no bottle mounts.
I suspect my bike requirements are not dissimilar to yours and if I could only have one bike it would probably be this:
http://www.shandcycles.com/frames/allroad/stoater-overview/
Re levers, if you have to have Shimano then get 105 or better. If you are running 9 speed Shimano old Campagnolo 10speed ergos will work better (in my experience). Don't overlook SRAM either though I thought their lower end kit felt cheap and flimsy.