The riding position is racy, and we suffered a numb left hand after 45 minutes of riding due to a combination of the Bullhorn bars and the narrow position adopted to cover the ‘sissy’ brakes in traffic (picking a flat bar model would be more practical for city commuting). The biggest drawback to the Soho is that on a single-speed the 15.5mph cut-off (for all e-bike motors in Europe) left us feeling like we’d been "deserted". Over the cut-off speed we found ourselves dragging that heavy back wheel with no alternate gears to reach for.
E-bikes mostly use motors and battery options from a few major suppliers: Bosch, Yamaha, Shimano, and Brose. A few other brands exist, but are less reliable or powerful. Some, like the Yamaha system, have more torque and others are quieter. But generally all four make good options. Look for motor output (in watts) which will give you an idea of total power. But watt hours (Wh) is perhaps a better figure to use—it takes into account battery output and life to give a truer reflection of power.