I keep up with the latest offering from Optibike, since I owned a couple of them from 2007-2012. These bikes are the cat's meow, but pricey. The original FULL suspension (All FOX), high speed (+28MPH), large battery (1000 Whr, full hydraulic disk brakes, integrate front head light, and high power/wt ratio. This was done back in 2007. Here is their latest offering.... seems to have it all except PAS and a rear integrated light. https://optibike.com/optibike-r15/ The New 2017 Optibike R15 New MBB with tougher gears gives you 175Nm of torque New Digital Display New 48V 22.5Ah 1080Wh Higher Capacity Battery 5 Power Levels gives you more flexibility for riding style and speed Torque Control Throttle gives you easier control while riding I do not know of a mid drive with more torque or power. Because it is throttle only, people do hate on the Opti offerings. Does it make that much of a difference?