TouraTech + Ram
The TT mount comes with a "U" bracket that mounts to the handlebar crossbar, which I have never used and there for have no comment.
+1, One more vote for the TT cradle in combination with a Ram mount. I bought the TT mount with the lock on the advise of TT USA. They said that while not common there have been reports of the TT latch opening in use and the lock prevents this. That said I have never used the lock (one more key to lose) and the GPS has never budged.