I have now has my Turbowheel Swift for almost 3 months and I absolutely love my little beast. She picks up a little slow but that can be a good safety feature when traveling in the city. I stay comfortable in mode 2 and I haven’t explored the higher speed on this unit. In other words, I have never tried max speed. It’s pretty fast in mode 2. My only complaint is that my left handlebar can be turned even while screwed into the stem. My right one doesn’t move but I can’t figure out where to tighten to prevent the left one from turning. I have to tighten the handlebars often because of this.