Thanks for the info. I really want a Riiese &Muller (R&M) ebike with the Nuvinci hub & the carbon belt(Charger or Delite)! Why? I already own a Trek Single Speed with a carbon belt. The lack of constant maintenance required when compared to a chain and derailleur has been a godsend. However I am concerned because the ability to cruise comfortably between 25-28mph seems to be limited. I am a power rider who prefers spin at a moderate 60-80rpm in a higher/harder gear. The bike I buy, if it is a R&M, will have two batteries. I also don't plan to use it for commuting either. What I want most is a recreational, fun, fast, ride that will easily provide the opportunity to go off the designated bike path or road. With two batteries I plan to not be limited by distance and/or concern about the mode I'm in - be it Sport or Turbo! Even, if I buy the Bulls EVO TR Street, I plan purchase an extra battery.
The final factor will be test rides of both bikes. Hopefully the Nuvinci will have a larger gear range. Listening to Court very closely has caused me to infer that 28mph Speed Pedelcs from Bosch probably should have the 22 teeth front sprocket to counteract the decrease in torque, 75-60.
PS: There is a local Trek dealer within five minutes of my home that I trust to provide any services necessary. The shop sells Trek. Bosch, ebikes also, so I am not worried