I had the opportunity to ride both of these bikes at Sturgis this year. The Vision is certainly a unique bike that incorporates a lot of high tech features (like BMW's machines). I, and a friend who is a R1200C rider, rode the Vision and neither of us was impressed with the bike. It is underpowered, doesn't handle particularly well in the twisties, although the slow speed handling is much better than my 2000LT. The Vision is a well balanced bike and does not feel as heavy at slow speeds as its 820 lb weight would seem to indicate, but overall, it felt as though I was piloting a draft horse. I think it would be relatively comfortable for rider and passenger on a long haul but, it just is not a very inspiring ride.
The Guzzi Norge is a very stylish looking bike and I have to admit, because I like almost all things Italian, I really liked the appearance of the bike, but I was not as enamored with the bike's performance as much as with it's looks. The twin cylinder engine vibrates at low to mid-range rpm more than I am accustomed to, the suspension feels too mushy (although the handling in the twisties was suprisingly solid and tractable given the mushy feel on the straight sections of the ride), and the engine power/performance was barely adequate. If looks were the determining factor, I would buy the bike. With all things I consider as inadequacies, I would not purchase the Guzzi. A far better choice for a sporty, well handling sport-touring bike would be a Ducati ST2 or ST4, Honda ST1300, Kawasaki ZZR1200, Triumph Sprint, or if you like cruisers, a BMW R1200C.