I just pulled that one out because it sounds exotic. I just saw one that a buddy was selling, and, well, I might have been more impressed if it were my size. You'll have lot's of fun on the Scott or Cannondale. Go with fit and feel.
The Felt is by no means a deluxe bike. It's made somewhere in East Asia, I don't even know the full pedigree of the component mix. On the other hand, it's at least three pounds lighter than the old Gios, it corners better (carbon fork), and with a compact crankset and 10-speed cluster I can climb anything that I used to climb with a 53-42 and a 7-speed over twenty years ago. It's going slower, I've lost twenty pounds, I've reduced my blood pressure and cholesterol level, and I'm having fun.