Hi Everyone, I am considering to buy Giant Explore E+ 2018 US version and trying to figure out what is the main difference between 2019 model. The main question I have is the motor on 2018 version Yamaha PW or PW-SE? 2019 most likely has PW-SE version since it has Bluetooth connectivity. Are there any other pros and cons between 2018 vs 2019. The motor is my main concern. Appreciate your feedback.