I am a brand new owner and I like it even more than I expected. I am a new motorcycle rider, but I did own an Yamaha ATV at one time. I have not had a chance to really test out the Enertia to its full potential as I have tons of snow, ice, sand along with below freezing temperatures at the moment. On my one test ride, I noticed that the acceleration is smooth, and the bike feels solid. In time, I will have more experience to share.
I see the next improvements to future Enertias in the way the seat/power cord is accessed. Right now it seems too awkward in my opinion.
Also, I bought my Enertia without test riding it. I based the decision on other people's experiences; like you are also considering.
Another plus is that I have already had people try to buy it off of me.