Neil,
My first (and only) test-ride was the Bacchetta Agio that I decided to buy on the spot. It is different, and takes a little time. The Agio has been discontinued, but there are other great bikes out there.
Be sure to keep test-riding. It does become second nature. I commute often on my long-wheelbase Agio, in heavy traffic, with no issues now. I just did it today.