I am testing a bike I really like this weekend. A Giant Defy Advanced 2. I can get the 2012 Defy Advanced 2 for $2000 or I can pick up a 2012 Defy Advanced for 3k. Do you think the electric shifting is work the 1k difference? I believe the 0 also comes with better wheels. Take into account I haven't seen in person the 0 in it's silver/red/black color scheme and I really like the Black/White color.