Most Trek models also have an electric bike version. So the choice is the same as before: you need to answer the question of where you plan to ride. In the city, the FX+, Dual Sport+, and Allant+ models will help you conquer the steepest hills; in the woods, the Marlin+, Fuel+, Powerfly+, and Slash+; on the road, the Domane+; and on gravel, the Domane+.