Thank you for your response, How did you like the belt drive and shift system? How did the wifi capability compare? What about getting up to speed from a stop?The ST2 is much faster. If you want to cruise at 28MPH, choose the Stromer. The Kalkhoff Integrale S11 is an amazing bike, too, however, it's better for cruising in the 20-24MPH range. Also, the S11 might climb really steep hills a bit better than the ST2, however, the ST2's additional power (up to 1200W at peak is ~2X the peak power of the Integrale) will allow it to climb milder hills faster than the S11.
I think it comes down to personal preference. I love that the S11 has a front suspension fork standard. The ST2 has an optional fork for $200+. The S11 is probably lighter, t0o.
In my opinion, the Integrale is just a little underpowered. My problem with the ST2 is that it doesn't come with a standard front suspension fork and it's really heavy.
The belt drive is fantastic, however, the Shimano Alfine 11 is well known for not being a very reliable IGH. It's prone to mechanical failure, and it's difficult or impossible to change gears under load (when climbing a steep hill, for instance). In most circumstances, though, the Alfine 11 works just fine. The Alfine 8 gets better reviews from most cyclists, however, I believe the Alfine 8 has less of a gearing range...300% vs. the 11-speed's 400%.Thank you for your response, How did you like the belt drive and shift system? How did the wifi capability compare? What about getting up to speed from a stop?