I am about a month into the e-bike scene and I am looking to upgrade in the next 2-3 months. I am 6' currently weigh 280 and targeting myself to lose at least another 30 pounds. My normal/comfortable riding cadence is in the 60-70 range and I can make it up to 80 but over that and I start to bunny hop. I live in Eastern TN in a quite hilly region. Up until 3 years ago I was avid rider weighing around 240 until my knees just could not take the hill climbing anymore. I really like the Haibike Hardseven but I have been torn between the bosche or the Yamaha drive system. I would like to get some real world mileage results from those of you that have been riding either system. My current Raleigh Tekeoa will get up to 20 miles in level 4 and I can get right at 30 in level 1 on the local rails to trails. I have seen 1 report stating that the yamaha would do 30 miles in turbo on level ground. My reasons for the upgrade 1. looking for a better drive system. 2. would like to get more range than my current setup without having to carry 2 batteries. my typical evening ride is in the 15 mile range and when the wife and I go on the rails to trails 30 - 50 in a day is normal. i bought the raleigh at a very good price just to give this try. Now I'm hooked and feel like a kid again