I went for the 5.0 over the 4.0 for the following reasons:-
- More powerful motor (I'm a heavy rider)
- Better front fork
- Better brakes. (Very important on a heavy bike)
- Rear Radar
The feature that surprised me the most was the radar on the rear of the 5.0, it has saved me a few times from nutcase drivers.
Where I live the price difference was only $400 extra over the 4.0 so for me the better spec was a no brainer.
Anyway congratulation on your purchase, and we look forward to seeing some pictures when your bike arrives.