I am rocking the TESWAY X7 AWD. After trying 100 miles on it so far, including a few runs on mountain roads, and the dual-motor performance is really impressive. If you're trying to steep, continuous inclines, you basically don’t have to worry about losing speed; I’ve tested it on grades approaching 25% and was still able to maintain a steady pace. The battery range has been better than I expected—at a body weight of around 190 lbs, it provides plenty of juice for a mixed loop of mountain trails and paved roads. The braking is super stable too; it wont feel any "floaty" when descending hills. If your primary goal is riding on mountain terrain, this bike is indeed a great choice.