I had a Bosch gen4 speed bike in 2019, I now have the Priority Current. Kinda hard to compare because the first bike had a 12 speed, so it would get to 28mph very easily and maintain it, withe the 5 speed IGH it is hard to maintain anything over about 23mph for very long. That bein said, the Current is quick is pas5, almost like a turbo,fun to play with if you’re close to home. When I am on rail trails and greenways I can go from pas0 to pas1 as needed with gear and it does very well, I think the Current is a good bike for the price , at least in 2021