I was going to say, that is not an issue at all with the Ride1Up cadence sensor bikes, but they aren't mountain bikes. I have mine adjusted so that it only provides 32 watts in PAS 1. I actually had it adjusted a little lower when I first got it, but it was too little to notice even at the slowest riding speeds I ever go. This feature of Ride1Up is what originally attracted me to their bikes. That's not the same as just being able adjust for 9 levels. I can select to use 3, 5, 7, or 9 levels, plus a 0 level, AND I can set each PAS level separately, and the settings from one range to the next don't have to match (eg. range 0-9, you can have PAS1 set to 5%, and on range 0-5, you can have PAS set to 10%). And on the 700 series, the menu setting for changing it is very easy/quick.Too late I already bought one, it arrives tomorrow. The display for the bike I bought has 9 different customizable PAS settings, I figure that should pretty much cover me. The Yamahas are out of my price range. I'm just looking to go put around on some local paths. I don't need that much bike.
Having said that, in the end, I would like a torque sensor bike, probably a well-tuned responsive mid-drive system and not need to change PAS levels much. And even more so if I was buying a mountain bike.