I have one and I was waiting to find out when it ran out of juice on the way back. I get about 45 miles with about 3,000 feet of hill climbing, riding as hard as I ride my traditional bike, using mostly level 4 & 5 with some 3 on the steeper hills, to extend the battery life. Like many ebikes, the power goes away fast from 3 bars to no bars and at 1 bar the power can cut out completely on hills. It's a good bike for people like me who are fairly decent riders and just looking for some help up hills, or to go faster. It would not be a good bike for people who want the ebike to do all the work. As you noted, it goes just fine unassisted, and most ebikes are a slog without the motor. I think it's the nicest looking ebike on the market, which is why I bought one.

I have the same bike. I got it to help me on hills. I recently rode it in the NYC 5 Boro Bike Tour. The 5 BBT is 40 miles, and just when I need the bike to get me over the Verrazano Bridge, it died at 35 miles. But I was still able to ride the additional mile to the end and then home without any difficulty. A portable charger would have been nice to have. Next year, I will be more mindful to not use level 5 unless Im going up a hill. It just got fun to me to be zipping along at a fast pace and not cramp up like I have in recent years. This was my 15th year doing this ride and my best.

Overall it was a good bike, but to be honest it is not a comfortable bike. You have to hunch over because the Handel bar stem is very short. They tell me you can replace it but because of fluid it is not a simple task. If it had some shock absorbing in the stem and seat bar it would be a great bike.