OK guys I just tried it yesterday
This is soooo smooth, and so much small in comparison to my DRZ400, it seems small because it's low and lightweight. While on it, I felt like I was on a toy, what a strange feeling. At my surprise, acceleration is increasing with the speed! I felt like if I was in a roller coaster
With this smooth behavior I did not feel my adrenaline that much. But you have to know that I did loose a lot of adrenaline driving my DRZ from year to year (since 2005). I would certainly get more adrenaline with the FX, but a guy from Zero came Thursday and brought back the batteries of their FX demo, so I could not try it unfortunately. They are going to replace it, don't know why.
The lack of adrenaline is not that much an issue because I would really prefer to drive it slowly, hearing the birds and taking my time at stops
The S is definitely a better choice than the FX, especially their 11.4 demo with a 2600$ rebate for the end of the season. This would probably allow me to go to my parents 130 km from here. I would also be able to go to work, about once or twice a month (I usually work from home) which is also 130 km.
I'll have to think about it for the next weeks/months.